Co-op campaigns would make this game 10x better than it already is. Something that is enhanced with multiple playthroughs, whether that’s challenge modes, mutators/modifiers, or randomized objectives.
Giving people a reason to play with friends and family of all skill levels would open this game up so much to new players, and give people a reason to stay invested in the series.
Why do destroyed buildings leave foundation rubble/scars all over that ‘never’ go away? Late-game maps/terrains get extremely cluttered (unattractive visually) and hard to read. Lingering remnants are confusing to see, as you sometimes wonder “Is that building still there, or is it gone?” It also makes it harder to find out where the last few enemy units or buildings are in Conquest matches.
Siege units shouldn’t self-destruct explode after suffering like two swings of a sword
There shouldn’t be some weird build limit when making farms with shift-clicks on mill or TC
It’s jarring and hard to understand why when you have several villagers selected and you’re placing farms, all the sudden farm placements hit a hard-stop and the placement tiles turn red. This never happens in AoE2:DE, so please use AoE2:DE as inspiration
Add a market tech where you can make trade carts go faster
Still think the animations need another pass where they are sped up. So many animations are weightless and floaty (slow motion), which is often the result of inexperienced animators. That’s fine for a while, but we are now a couple years post-launch and the game should be entering a phase of polish, imo