Some positions (Russia & Rumelia spring to mind) need the odd war to obtain their historic objectives but many players feel that if they attack a player run position and inflict a bad defeat on them they will drop out and this will have a negative effect on the game they are in.
Simple solution to this problem.............attack NPC positions
The problem with fighting Richard's NPC's is that its a bit like playing my Chess Computer. If you start off with a small fairly weak position a low setting means you will probably be able to annex a neighbour with a cunning plan and a dareing coup de main. But as your position grows stronger the difficulty setting gets turned up! And towns which were captured by a dashing Captain and his trusty regiment crawling through the drains now seem to have defences designed by Vurban, Governor's equiped with cystal balls and Garrisons which make the Knights of St John on Malta in 1565 look to have feeble morale. So prepare to use about x4 the resources you would expect and take about x5 as long.
On the plus side NPC's may not be willing to listen to your most generous Diplomacy in peace time but they are generally willing to make peace and not start a blood feud if you want to give up the effort and if they have suffered a number of defeats they are willing to consider an offer which leaves them with a reasonable and still playable position for a new player to take over. For example if Sweden losses one of its Baltic Provinces to a Czar with Naval ambitions it will lose recruits & tax income.
But following a Military defeat a peace offer which costs Stockholm one of its Baltic province but allows Swedish Nobles to keep their Baltic Estates, gives Sweden right to recruit, low tarriffs on trade with Russia and a large sum of cash to clear its war debts may well be accepted. Esp since it means Richard can pass a new player a position with cash in its treasury, a intact Army etc and a load of anti Russian NPC's and a map with Livonia marked "Annexed by Russia in 1707" in blood Red.
The same can apply to a NPC Venice and its holdings in Rumelia. A NPC Govt is never going to give them up no matter what you offer but a massive attack which takes the places followed up by offers to return POWs, return some of the captured locations and allow Venice to start to trade again may be accepted.
The danger with this type of campaign apart from some of Richard's NPC (I am sure in G2 the Syrian Janissary Corp did not need to eat, drink and had access to staffs of teleportation and cloaks of invisibility) is that Richard likes to offer new/returning a option to take over a position which is really active in the name so even if you start dealing with a NPC position you could end up dealing with player.
Classic example has to be England in G7. To obtain peace with France the London Govt of lead by John Churchill etc abandoned its allies, shipped King William off to Scotland and arranged a Jacobite restoration in England. But then dropped out after the murder of James II by his own Goverment outraged European & Public Opinion (Honour must have been very close to Zero).
At around the same time the French Govt which had been so important to the Jacobite restoration changed and as part of the Agema peace between France and its many European foes the Dutch obtained a French promise of none intervention in England. How difficult should it be to remove a abandoned NPC ex French Lackey & Papist who is hated by most of his own Parliament, People, Minor English positions like the HWIC and has really low honour and restore Good King William?..............well its gets a lot harder when Richard gives
English position to a very experienced player who wants to play a real red in tooth and claw Jacobite.
Since 9/10 players and a NPC English Govt would probably have shipped James III out of a Window or back to France and had a Protestant restoration this highlights the problem with making peace with players...............some of them do not want to make peace!
But in principal I think to fight a limited war and then end it the same principal's applies as with NPC govt:
1) Set out a clear and limited objective - ideal is one which other player can see is not personal and they can understand. Most Swedish players will understand that Russia wants a Baltic Sea Coast.
2) Accept that you disagree and the War is to decide a particular issue......the Last Argument of Kings.
3) Offer peace terms which give the other side an incentive to end war on terms. For example Russian campaign takes Narva and Tallinn and throws Swedes back to Riga.......If Russians then offer of peace, return of Narva, £5M compensation, permission to recruit 2,000 men per year and return of captured Garrisons in exchange for Sweden cedeing a Baltic Province and some technical help for future Russian campaign V Turks plus offering a free Hand in Baltic. This gives Swedes some options over how they can play game going forward......they can either fight on to try and recover Igena knowing next campaign season could cost the Livonia (a double or quit option). Or they can accept campaign outcome recover Narva & free Swedish Captives and start thinking about getting their losses back by taking over Norway or Danzig.
Generally speaking if you just give up without a fight you honour takes a dive and your armed forces morale is shot. But if you put up a good fight and then do a reasonable deal this will gain you honour/economic health even if you have suffered a technical defeat.
Also if you are willing to allow your diplomats to sort out a peace at a peace conference I think you are generally going to be better off doing it yourself since a conference peace is going to be a mess! Classic example from G7 has to be The Peace of Warsaw which left Russia in control of a major Polish trades ending in Riga and Russian Trade routes and its new Naval Base of St Petersburg ceded back to Sweden. Plus a major Swedish Fortress still on the route between Moscow and its new Port in Riga.
It would be virtually impossible to have drawn up a less satisfactory or messy peace treaty (on doubt Richard tried) than this one.
I wonder if rather than allowing Richard to draw up a treaty players could consider getting another player to draw up a treaty for them since historically a lot of treaties between Baltic Powers and the like were signed under influence of Louis XiV, English, Papal & Dutch diplomat's etc.