I 100% knew this game would suck.
GBA is more for 2D IMO, Castlevania, Metroid etc.
GS and GS2 work well because they are simple gameplay style.
3D should stay away from GBA, unless it can be done properly......
Castlevania has some 3D in it!! (atleast Harmony of Dissonance)
Golden Sun is only 2D. it only has scaling and some rotation(some stones).
I'd like 3d to stick to GBA, however, I want good looking textures and as many polygons there's possible without dragging down the fps to low.(Medal of Honour)
A Castlevania with 3d backgrounds (and 2d background above) with sprites would be sooooo damn cool.
Resident Evil for GBA maybe?.
Perhaps Warcraft in 3d on GBA, where you only play a hero with locked camera(where you can rotate cam with R and L or something). (WC3 doesn't have that much polys)
Mario 64 for GBA!!
These are only simple ideas of what can be made.