Anyways, if I were to use SNES-like graphics, I would stick to the traditional way.
Usually sprite layers are 16x16 to 32x32 unless it's a background layer.

Then you choose colors from the 16-bit palette

Then out of all the colors, you can only choose 10 colors per layer.

When I was playing truces salvage mod, I thought up an idea for something like this, Rip up buildings, make a base, get weapons and try to defend them.
That's what I'm going for, yes.
Maybe find someone who will model for you?
I could possibly ask Bushido, because I know he's pretty good. Anyone who would aid me in development gets a share in profit.
But who knows how long until I actually get started on this.