If people jump through the correct loops and hoops then you can host your own server for Pokemon Showdown and set up any metagame or ruleset you want, presuming you know how to.
http://www.smogon.com/forums/threads/3538721/#post-6227638And unless the changes you advocate for are really slight, you can try to submit your idea for a perfect metagame as an Other Meta.
http://www.smogon.com/forums/threads/read-me-rules-simple-questions.3532781/ (scroll down to "How to Submit an OM/Pet Mod")
However, it'll take time to build up an active playerbase, so if you're one who not only want your suggestions to be enforced, but also wants a lot of people to play that meta with, then perhaps it's time to acknowledge you're part of a vocal minority.
