Frame rates on games on the ST were terrible, which just came down to there not being enough cycles in a single frame to really move stuff around. Sprites or tiles would be great but are a bit specific. Blitter hardware subsumes all of that under a more general utility. The STe's blitter when it finally came along was great. But by then it was too late, nobody was going to make games for it because the market was too small.

Once clockspeeds got up to what the Falcon could do, it was unnecessary. But again, too late.