I do not believe this is a very good idea. As said above, there are some logistic problems that would harm the game a lot.
As for a solution to the blobbing issue I think there are two options, and only one is something Relic might possibly do.
1) make small arms a little more realistic by making models drop like flys out side of cover, that way blobs a moving get devastated by even only a few squads set up in cover. There is a reason in WWI casualties were so high, as it turns out they A-moved into the enemy too and look how that turned out
2) make machine guns kill. there were a lot of reasons in WWII that infantry combat changed, and why squads moved the way they did. A lot of it has to do with the fact that indirect explosives and machine guns kill in swaths if in the right conditions. One machine gun could easily slaughter a whole platoon if it had an ambushing position.
My point is that right now gameplay wise we have a suppression tool, which is cool and all but it doesnt do jack shit against blobs simply because they get killed off by all the return fire. You all have seen a blob run at a machine gun in this game, in real life they would have killed half of them in the first burst. We dont need anything that drastic, but I feel if we made all Machine guns much more expensive (like on the pack howi/ infantry support gun level) and made them both suppression and killing tools bolbs would be halted in their tracks. I'm talking pre nerf Obers damage if you get caught out in the open. It wont solve all the problems, and will definitely cause more. But we have killing indirect fire, I think we need killing MGs