Thanks to licensing issues, it's highly doubtful that the Ultimate Alliance games will be made BC anytime soon. Even the ports for the One/PS4 were removed from the marketplace (but thankfully had a massive sale right before, allowing one to snag both games for $15 total).
As for the main topic, for me, my main wishlist has already been achieved (The Battlefronts, the KOTORs, Jade Empire, Mercenaries). If I had to add another game, I'd probably pick Raze's Hell or the Mortal Kombat games (Deadly Alliance, Deception,, Armageddon).