As far as actual graphics modding... well, first, I'd like to see that unit mesh editor that someone was working on come to fruition.
I KNOW YOU'RE OUT THERE. I WANT THAT PROGGY DONE.
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And, this might also be a bit of a stretch, but I'd like to see someone attempt messing with the water shaders a bit. I'm sure some things could be tweaked around; for instance I'd love to see a little transparency from the surface (again, I told you it's a stretch, but it has to be out there somehwere...). :hmm: