Small things, sorry if mentioned:
- ability to go to province we targeted with any spell [mostly site search and artillery and teleport (go to commander works only if he survived)]
- summaries for fort battles
- go to province for bad things that happen to our commanders [mind hunts, assassinations] + ability to check info about killed commander [I want to know who I lost with what items]
- copy/paste option everywhere [I like to show battle results, events etc to my friends; other thing is sending in-game messages]
- in-game messages should have more space to write
- spell-searching spells targeting provinces with 2-3 magic sites after going though other provinces
- when transfering item laboratory should be at top, not bottom, also we need confirmation for throwing away
- item count for things you are forging + display of free places in lab
- better management of unit selecting in garrison with huge number of units in province [few k]
- monthly forging
- limit of gems for commanders to use per battle
- blacklist for spellcasters
- highlighting friendly/enemy units on battlefield
- flagging province/commander as not available for gem pool [so when you take astral gems from your clam holders you don't have to give them back to all those mages set to antimagic, doom, returning etc etc]
- option to check commander ID to use for teleporting communions
I should have some more, when I know what they are I will write them

I really hope something can be done with that things and it won't be a Dom4 wishlist.