Kirk

That happened already in Tyranny, you could go and talk to any of your companions, they were all atop the spire you were currently visiting. So I think it would be obvious to do the same in PoE2 and I would be very happy to see this implemented

Fulvano's U-boat, new war game from Obsidian, in stores at Christmas!

I voted 6 members in the party as preferred size, but I will give devs a try and will see how it works with just five.

Vithrack companion would be very cool. Also udead companions - fampyr or ghost. Ghost would be interesting, but limited only to the watcher (other could not see him, like GM in PoE1 was).

The one thing that bothered me most in PoE1's stronghold was that the companions I didn't have in my team weren't taking part in battles in stronghold or in the battle of Yenwood. It was strange and immersion breaking for me, because they were inside stronghold, but they didn't fight along with me against enemies. I hope that will change in second Pillars, no matter if we will have stronghold or ship.