yes, I think most old 2d RTS games would be amazing sellers if they got officially ported. Been thinking starcraft and diablo should be high on somebody's list, if blizzard doesn't want to do it, I would hope they would atleast licence their intelectual property.
The one I would love to see the most though would be Septerra Core, but apparently I'm the only person who liked that game
until somebody figures out there is a fairly large, untapped market here we will have to make do with ScummVM. (speaking of which, different engine, same developer, grim fandango on PPC would be nice.