I agree that we need at least one of the big boys,but they have pretty much restricted themselves to Windows and Mac.I don't think it will happen.
Imagine/Real3D won't make it on their current incarnations,but they may be very good low/mid range options(in features and price).
We can't expect the big companies to go crazy and start losing time producing software for a small/unknown market,so we have to be happy with "lesser" programs.
Not everyone needs or is willing to pay for Maya or 3DS Max, so there is a niche for enthusiasts.
My bet is Imagine,which I already use. A specific A1 version would make me drool...
