It might be a thing for CoH3 should that game ever be made, but I highly doubt it. CoH2 already turned out to be quite a hassle, and even "just" having two builds would cause at least double the work regarding balance. Probably even more because developers rely on player feedback and players will often not specify what they are talking about exactly. So just tracking which feedback belongs to which built is quite difficult. Just imagine how discussions in this forum would look like if every unit had a second version that might or might not function slightly differently.
Well, I think this game is in a good shape for team games than it was several years ago, so might not need alot of work (might need minor tweaks but nothing major changes). So that leaves only 1v1.
In regards to feedback, you do have a good point but having separate sub-forums (like COH2 team balance & 1v1 balance) would be a simple fix so people could post stuff in the relevant threads.