My two cents is that you don't really understand the concept I exposed. This is sad 
Too bad i do. And i'm telling you, it will only affect spam, not blobbing.
And the worst part: it will minimize fun strats.
-snip-
Factions like soviets are supposed to use callins, and skip tech. The latter counts for OKW & USF as well, and even as OST you rarely ever build all four Tiers, even though you have to tech for them. One would need to rework the whole teching / economy system - that's never gonna happen, nor will it EVER fix blobbing.
A blob format like the one from SPrice would still work. He just gets some REs, or drops Paras,... or keeps spamming Rifles and techs up to LT / Cpt into Major - oh wait, he already does that btw.
Again, a blob is nothing else than bunched up units, no matter if two or twenty units. You can't just magically draw a line somewhere as you please. In the end the more you bunch up the more you should suffer to indirect fire, supression, that sort of stuff - but one (too) rarely does in COH2.
Sure you can debuff blobbing without drawing a strict line, by incoming accuracy modifier due vicinity, increasing AoE on explosives, giving supression a better AoE, etc pp.
The more you blob, the more you suffer.
- the current ISG / Howi mechanic is a good example for this.