If the purpose isn't to apply penalties to units, don't apply penalties to units. Blobbing is already discouraged. Good micro is already rewarded. Blobbing is only vilified by people who can't beat it.
The purpose is to discourage blobbing by punishing it, the most direct way to accomplish that is to apply a penalty for it. If blobbing was adequately discouraged and good micro sufficiently rewarded, then I doubt there would be such a large thread about it, also your last comment comes off as a bit elitist to me, please realize that the vast majority of people who play this game are much more in my experience range than yours. And we are perfectly capable of recognizing that blobbing is a bit on the cheesy side, and in it's current state, can reward lazy play, particularly in the most popular game modes (large team games).
It's already wise to split your units up before your next big engagement.
Great! If you are already doing that, you will not be effected by the debuff.
What am I overstating? I think this will make blobbing worse across the board and that will not necessarily be a good thing. To attempt to balance this anti zeal aura will require a lot of time and testing. The implementation questions involved have already been covered by others. For what purpose? Because obers are too strong? The goal is absolutely not to discourage any play style. Why would a game developer ever aim to discourage a play style?
The tools are clearly already there, there will be testing required for any change, so that is a given. My point is that if something needs to be done about blobbing, why wouldn't you address it directly? Not only that, but as far as your balance concerns go, I would be far more hesitant to start making changes to individual units (based on their blobbed strength) that may have negative effects in, for example 1v1s where blobbing is less prevalent.
Why would a game developer ever aim to discourage a play style?
Seriously? Why would Relic take away heavy truck crush? - Because it is bullshit. Why wouldn't you want to encourage and reward solid gameplay? I'm pretty sure that is more or less the point of the game. The better player should win.
The toilet is like the one thing in the whole bathroom that is not currently broken.
I think what we have here is a case of your golden-plated rose-smelling shit sliding right through, whereas us simple plebs clog it almost every time.
In all honesty, I don't see blobbing as that big of a problem. Though it does piss me off to run up on a surprise volks blob and get a t34 instantly killed, I recognize that maybe I should have sent a screening squad in first, etc. I recognize that there are tons of things I could have done better. But if you are going to do something to combat it, I don't understand your aversion to accomplishing that in a way that rewards good micro and punishes lazy play, as opposed to potentially destroying a unit's effectiveness in other situations.