Maybe cubecraft can do a big change maps in solo skywars,
make a thread or announcement, and ask people in the discord which map can be deleted and replace for a great new map,
Hey, so (un)fortunately the Designer team mainly focusses on Minecraft Bedrock's Marketplace as it's quite a profitable platform for our content. Though, I believe there's been
a map update not too long ago for both Java as Bedrock. If you or anyone else you know wants to contribute to future map updates, they can always head over to
the map submission subforum to submit their own, self-made maps!
Aside from this, this is not generally how suggestions work. You can't just say "new maps". You should give ideas for themes for future maps (for instance, Japanese, ocean, swamp, etc.), maybe even include images for future maps (for example, images of Japanese buildings, ocean temples, swamp monsters, etc.)