Don't replace Brawl with Brawl+. I enjoy Brawl+ as much as the next guy, but seriously, I don't think it should become the dominant game to the point of forcing out Brawl. This isn't because of my own issues with the game which can be alleviated or not as any of us prefer, but rather it's an opinion I've had since the codes first started coming out. Brawl+ is a fun thing, and fully deserving of side tourneys, and maybe small tourneys, but due to its inaccessibility and frankly nonstandard nature (no one has yet used the "standard" Brawlplussery codeset in a tournament, btw), it can't be much more.
So while I encourage the use of this game in side tourneys, or in small local tourneys that don't require many set-ups, I strongly suggest that you exercise self-control in the application of this concept.