I'm fine with Proto Ultima as it is now. The Succubus was an incredibly boring and bland fight. Minimal mechanics, a mountain of HP to chip through, tossing out adds to slow down chipping through her HP. Was the most dull and boring part of Dun Scaith. Proto Ultima is at least interesting for the moment. Even when it stops being interesting it will still provide some extra loot. Its nice knowing you can go into Dun Scaith and get some guaranteed loot from it.