I agree with all of this! Thanks for putting this list together. Great ideas.
I made a post suggesting more tattoo customization and different, more odd board shapes like cruiser or old school board shapes or just ridiculous board shapes like a sword or something. More customizability with everything IMO.
definitely need to bring back custom parks/creating parks and private servers. Great idea with leveling up for just skating around. Also matchmaking for multiplayer challenges would be dope to finally complete some of those as a lone skater.