First, for even having a chance of someone porting a game you need to find the Sourcecode somewhere, and It needs to be licenced in an open manner (like GPL)
Second, the GCW0 has 320x240 display, SVGA games like Crusader games will have to be downscaled and prolly not work that well...
Now it might be possible to EMULATE it.
I dont know if Dosbox can do scaling, but you can try
it MIGHT also be possible to run the PSX version with psx4all (you should be able to find it somewhere on this forum)
Not sure if there is a SATURN emulator for GCW yet but you might want to look into that too.