For that matter, it would be good had we an option to simply build all four party members anew at the character creation screen.
That's planned as far as we know. (And it can be achieved with some effort already, as you're probably aware.)
Another planned system is customizable mercenaries.
Regarding character imports - I'd replace that with character creation that's campaign-independent, so you can just launch the game, make a character and save it for later. Which would be useful in general - say one day you feel like making a dozen characters and some time later you'd like to jump right into a new playthrough. Not 100% sure, but I think Solasta does it.