So the first issue is more of a question - do the hit percentages take into account buffs or other things ? The reason Im asking is Ive never seen characters miss so much with very high % chances in my life. Ive had the entire party miss an enemy for 2 full rounds when their hit percentages were between 65%-90%. Now sure that is possible but statistically when you have greater then a 1 in 2 chance of hitting and you miss 8 times....... And this seems to be pretty common. Also not sure if its a bug but I notice when Ive knocked someone prone with a spell or ability they become much harder to hit(like 25% chance) which seems like the opposite of what it should be.
Second issue is just maybe a suggestion - I see quite a lot on people asking for more then 4 party members. Perhaps the simple way to do that would just be to make it "easy" difficulty. That way you guys dont have to try and go back and re-balance the whole game for 5-6 party members. You can just take normal mode and allow 5-6, that should automatically make it easy mode. Normal and hard modes would keep 4 party members so no re-balance necessary. (though I know adding an additional party slot is still a good bit of work).