please, state the reasons why you think that it is not as good as the Community Matchmaking.
When someone goes to public MM, it's usually because they just left pubs, and made a transition to comp, however, the same level of skill will not change, meaning comp becomes a glorified pub
Additionaly, no class limit is kinda dumb, and you could argue that 6 engineers or 6 scouts are fun, unless your team is pre-made, you will get 3 snipers 1 engineer 1 demo and 1 engineer.
Community comp is much more organized and fleshed out, the moment tf2 got popular (even before F2P update), it had a community comp scene, but only now, with the release of Overwatch and the Comp. success of Cs:Go, they finally realized it's potential, but albeit a bit too late