Well something the PowerVixxen should have if it is still being worked on is onboard 3D acceleration.
It's a crying shame there wasn't a Blizzard 1230-V with some kind of 3D accelerator on it (a bit like the SuperFX for SNES or SVP/32X for Megadrive).
The Amiga died rapidly around the time the first wave of 3D consoles came out in '94/'95...
Oh, and a dedicated mouse port and two joypad ports so we don't have to fumble at the back of the machine when playing multiplayer!
;-)