Well, to be honest, normals has never officially been for "top quality" matches. That's what ranked is for.
Normals is a place to play with friends and screw around while still having a competitive aspect. It's about the only place in league where Riot's dumbass logic of "as long as the both teams have the same average mmr then it's good" is appropriate for simply because it is the place for friends to play together.
Unless you're saying we should give up being able to play with friends all-together (unless we are all the same rank) then normals is the exact place for stuff like that to happen.
Hell, I actually like the challenge considering how nothing is on the line. I play against high golds/plats/and increasingly more frequently, diamonds pretty often when playing solo. When I play with my full team in normals however, it's always bronze/silvers with an occassional gold and a rare plat simply because their mmr is significantly lower than mine.