I think it would be cool if there was a map contest similar to a preset contest. To add onto that, the top map makers/finalists would have another contest. The first place winner's map would be added as an official game map. This probably couldn't be done without the source code, though.
Because of the whole mass-markings issue, maybe there should be a marking sync or something similar so everyone can see markings. There would also be an item sync so everyone can see each other's items correctly and without glitches. Not everyone can download item and marking packs, and not everyone wants to. The item and marking packs are still cool and still a smart idea, but it gets annoying to have to download things constantly. It especially gets confusing and irritating when people need to get several item packs and they don't work properly (ex., a few items from one have the same name as the items in the other pack but are slightly different and replace/delete the other files or cause glitches).
Basically, a more unified FH would be nice. I don't think a map sync would work because 1) there's tons of maps, 2) more maps are constantly being created, 3) it would probably need the source code, and 4) it would be nearly impossible to find a particular map because of all the portals. Plus, they wouldn't even fit on Cape.
Even if that last idea might have some problems, opinions and feedback would be awesome!