The only map I miss is Fluorite, really. Temple of dreams was a pretty one, though.
I think those have the most redesign value over all.
Fluorite was a BIG place where you could most definitely find an unoccupied spot to RP, which is pretty nice. A newer fluorite with more vegetation and trees, even caves and rocks, would be pretty cool!
Temple of dreams also has redesign value due to, let's face it, It's a temple of dreams. Floating rocks, structures, flowers, stars, etc. It could really be remade into a BEAUTIFUL map, I think.