THe "solo badge" will fail like honor ribbons in the long run.
Yes some people will be excited about it for a while, but when there are bronze and silvers who got boosted to plat or higher in groups while still playing like a bronze or silver the validity of ranked is compromised.
I don't even feel any reason to get back to plat this season. It literally means nothing anymore. Only holding on to gold should the victorious skin be a champ that I like.