As it stands, this is all there's to it. They're allegedly going to work on polishing up the endings. Right now, there's essentially only (ending variation spoilers)
two endings with different variations between them. You control the Netherbrain and mind control everyone else, whether you do it for yourself or for Bhaal (Dark Urge). The only other variation to this is that you, similar to the Minthara situation, control the brain 'together' with the Emperor, but it's just the same cutscene except the Emperor will sit on the throne instead and say "In my name", meaning you're basically just his thrall. The other ending is where you blast the brain, be it with Gale's bomb or having the Emperor/Orpheus/Karlach/you do it as mind flayers. This will trigger the short sendoff for some of the companions you still have, while others are excluded (Shadowheart, Minsc, Jaheira, Halsin, maybe Minthara, while Wyll seems tied to Karlach). Unless you kill yourself (mind flayer or Bhaalspawn) before these sendoffs, at which point it just fades to credits anyway.
It's a common complaint so it'll likely get polished, but expect it to take some time and how drastically it'll change is still to be seen.
