These 2 game types are soooooo different and have 2 way different communities. It also seems as if there are way more bugs in coop, or just the people who play coop do more bug reporting. I'd say it's the second one. PVP has sooooooo many stupid features, bugs, game mechanic issues, balancing issues, etc. The whole game is unbelievably clunky, and since pvp is much faster and requires much more critical thinking, the clunkyness breaks all the rhythm and concentration.
All the reports for coop shroud and overflow the forums making the pvp reports come second.
Please do this.
Alternatively, keep the existing forum, and create a sub section for the individual gamemodes.
This also ties into keeping the updates for pvp and coop separate.