Also could the SGX really to 128 Sprites without significant slow down or would it be like the SNES trying to do that many sprites?
Atlantean can update 63 sprites at once without slowdown.
I can't imagine Daimakaimura actually using all 128 sprites at once though. Daimakaimura also probably does less processing than Atlantean, so I'd imagine there wouldn't be slowdown unless the programmer forgets their meds that day.
and no, it can't be converted to PCE CD. It can't be made to run on a regular HuCard.
In theory it is maybe possible (at the expense of some of the visual elements). In practice? No. No. No.
It's a SuperGrafx game. The amount of BS that would be required to hamfist it into working on a regular PCE isn't even worth it.
Anyone who says they can do it is full of shit. It would be a total clusterf*ck.
No.