So, you want to know what the community is looking for in the new Command and Conquer game that will make the franchise popular again. This is how to do it.
At the moment, you have everyone running around one general Command and Conquer themed forum I.E. "Global Command Center" talking about what they want in a new game. Here is the rub: They are making requests in a very unspecific forum along with other threads that may or may not be in regards to the new game.
The solution is to make an entire forum dedicated to what the community is looking for. Call it "Ideas for the next Command and Conquer game" Do you want something in the new game? That forum will be the place to ask it. Example:
You: I would like Base Building to be in the new Command and Conquer game
Instead of making one or two threads in the very general and unspecific forum "Global Command Center", you could post it in a forum dedicated entirely to threads just like yours.