Toio said:
first of all, the random events should have more triggers so as to not have the same events trigger often, maybe stab triggers
less wars is true from 1600 onwards, (thats why I have my 30YW running from then), but this stems from what i call "relations creep", that is as the game ages , the relations all creep closer and closer to 200,
I would like to see all the random events have any relation bonuses maxed at 10 points while keeping other commands as is.
my take is this: quick , rare wars have to do more with WARSCORE and LARGER FORTS rather then anything else.( if look closelly that generally only happens in europe, asia and somehow less other regions other then europe, always have them

, as long as china does not remain too "big"). but in asia there other problems, read further.
generally in europe, ai is very bad at effectivelly taking large forts mostlly becouse they do not send enough troops( an exception somehow is austria wich always manages that aspect compared with anyone else in europe). the rule of thumb is that a nation with even a SLIGHTLLY less land tech will never manage to get even a medium fort, and especially in winter. relations aspect while they might affect somehow , i do not see them at all as the main couse for this. as long as a nation has a core to get, they will do so at any costs regardless of their relations
also ai wars have a certain limitations( to avoid endless wars i guess) where after 3-5 years they "must" peace. so back to "status quo"

. myself i always have a tendency to hekp vassals get "bigger" and i provide all type of support from troops piling-up (to keep the siege) to giving away money( so ai can sustain its troop quantity). but against medium forts and above that proves without much point , so i find myself reloading game over and over when at war( making sure i keep siege every time i do so while ai "restructurates" again upon reload).
another aspect in late game is an annoying bug that has GREAT IMPACT, even if not very obvious at first( the one where ai troops keep "fleeing" constantlly even if they have enough numbers to sustain a siege). the only thing that makes logic for me regarding this behaviour is to force ai NOT TO WIN; if that is not the case,would it be a "bug"? a great example here would be spain, wich after 1600's or so, all of a sudden seems to loose any interests

in any conquests and "loosing" on purpose from what i seen.
in asia the problem at times is even more straight foward when comes to forts; becouse ai keeps building them everywhere but never ATTEINING land 41 and above where it could PROPERLLY assault or simplly siege thsoe forts
my APPROACH/reccomandation would be to either associate larger forts with a higher CRT land level AND/OR making historical and random events where forts would be decreased over time.( a point case here would be paris or london where ai always seems to "forget" making ANY forts in their capital

, however unless a human ai never gets that far to siege them anyway)
the WARSCORE issues: it comes into play becouse in late game is much EASIER to compleatlly anihilate scout or pillage troops upon contact. it results in ai loosing the "reserved" numbers of such "armies"( on both sides, regardless of their size most of the time!) and they have to white peace due to its "internal" "lost" war score( even if they might have an advntage when appied to overall WAR score) or for some small amount of cash exchange. also over time the score value/province DECREASES, for a few reasons well known.
the above thoughts are just yet another aspects where i believe the eu2codes are implemented to "decive" the player in making things seem harder, while they are certenly not from a logical point of view at least...
also modding ai behaviour to go(attack and siege eventually) for capitals FIRST(or try/attempt to) will certanlly help since the defeating ai nation will "give up" the cores that the enemy might have on them, even if not sieged or big fort. the historical reasons(if you need one) for this behaviour would be precise as well, becouse most of the medival wars were fought in-between the rulling monachs( and their families) wich almost ALWAYS resided in the capital city...so the ai should logivally try to get those first and "kill" or "capture" the enemy royal families