I would like to know how companions will work in the release. Will the group be closed after Act 1 (a stupid feature which I hope will not be in the game)? If so, will there be companions you meet later on, so you have more than 3 as possible party members after Act 1? Actually should be the case, otherwise when in Act 1 could we get access to them?
Personally I don't need more companions, my party will probably consist of Cleric, Wizard and Warlock, and I doubt we would get more than one companion per class. I prefer humans, elves and half-elves, so I don't miss other races. I also doubt I would like a Larian-made Barbarian companion visually, so I would make me a mercenary here, if I needed one.
On the other hand, variety is always nice, so 12 to 14 companions, at least one per class, would be a good number. And I get the argument that modders need some basics, that also counts for more companions.