Well put.
A computer can't really judge if a coaster is a serious coaster or just a joke. But I feel like it some better form of server authorization would be better then the current public key thing they are using now.
I honestly feel like most people who do play this game have already played RCT for years and most of the people who are actually new to RCT are just greifers from Joel's videos (funny enough thats how I found out about OpenRCT).
Get someone like Nerd3 to play this.
Really some official servers dedicated to learning how to build coasters sounds like a good idea. Less restricting then most realism servers but not filled of swastikas and memes like the free for all servers.