Those are all really good, but I think we should have underwater battles with Krakens, those shark things I read about in an in-game book, and some half squid monsters I read about from the same book. Or at least a shipside battle. Tentacles really creep me out and I would like the chance to kill fictional creatures that have them.
On top of that I'd like a new class, not sure what but if you're gonna revamp the class system may as well go big.
And reclassing as part of the import, of we're getting knocked down to lvl1 we may as well get a new class if we don't like the changes to our old one.
And maybe changes to the armor system where it's either plate or nude. To be honest I haven't touched PoE after my first playthrough and you may have already fixed this.
And I'd like PoE to be the trilogy BG wasn't, namely in that you don't pull out something like ToB.
You should also build a wall around these forums and make RPGCodex pay for it.