Assuming that Overhaul will deliver a stable & sensible IWDEE and continue patching BGEE/BG2EE they will have assembled a decent base of supporters. So, *if* they have license to produce more D&D titles, I'd rather see their efforts in:
- D&D edition "2.5" - 3.5 (i.e. IWD2 level rules or later; but not 4E et al.)
- NO BG3! (That's a deadend, boy & girls.)
For example, IWD3, i.e., a frozen north adventure with a new party, will work splendidly.
If The Suits (WoC, Atari, or whoever is the reigning bastards these days) are proving uncooperative with licensing, make us a nice new isometric CRPG with DECENT WRITING instead. We'll buy it, especially if it also has a balanced combat & magic system. (Isn't Pathfinder easy to license & use?)