My two septims:
I'd like to see all excited/passionate modders who want to work on a province focus on a single province rather than start a handful of different projects that aren't going to get finished.
I'd like to see a model of release early/often. Working with a large group is difficult. Coordination is half the effort. And it is easy to get sidetracked with RL since RL does take precedence. Releasing early and often means you're holding yourself accountable to the public which adds motivation. And if nothing else, if you decide to step away at some point it is far easier for someone else to pick up where you left off. Not to mention that all too often I see someone post that a massive mod they were working on was lost due to a HDD crash. Releasing files to the internet means they are less likely to be lost forever.
And for what it is worth, I'd love to see a Battlespire remake. It would be smaller than a full province. It isn't as daunting a project. It wouldn't require as much dialogue. It would be a fairly linear dungeon, where small groups could be focused on each level. I see it as a very feasible project to finish.