First of all i highly believe in having a gametypes forums, so I ask you forgehubbers to vote on this thread stating yes or no (seeing as i cannot makes polls for some odd reson) ,and also for the mods I ask that if we have yes get over 200 votes I ask if you will make a gametypes forum.
You should post this in the customer service forum, as a suggestion. But I don't think you really need a special gametype except to go along with a map, and you post the gametype with your map when you release it. So no, I don't think we need it because it wouldn't see much use.
Please more specific, you won't get any votes if you are not clear. Do you mean Custom Gametypes? Personally, it is uneeded. Most custom gametypes need a map to go with the gametype, unless it is a well known custom gametype such as Conquest. Then they are posted in a thread dedicated to various gametypes (gimme a moment, I'll find it). EDIT: Here it is http://www.forgehub.com/forum/casual-maps/2433-community-gametypes-database.html