I'd love something like Dragon Knight Saga overhaul + new story treatment done to Dragon Commander. For Divinity 2 it turned a generally mediocre unfinished game into one of my favorites.
The concept standing behind DC is superb, however, the game is far more like a prototype to me (or early Beta if you are Blizzard fan). RPG elements are finished and really fun, but RTS needs asymmetric balance, fog of war, better/fancier tech tree and most importantly MAP DESIGN! I mean play Starcraft or Warcraft campaign(s) and DC Campaign and see the difference in how the maps and objectives are structured. Especially where you don't do always the same on each map
Its very hard to produce something state of the art if you are doing it for the first time (I mean RTS), but that's what overhauls/expansions (not that EA styled +1 shiny armor DLCs, but real expansions)/sequels are for!
Cheers from RTS fan and a game/server programmer - I always believed in you