Very good post
The problem with blobs imo is lethality. Mortars and rocket arty could have a much larger AoE with little far damage, consistently outputting a lot of damage to blobs while maintaining the same lethality against individual squads. Imo this would also help define mortars, being able to consistently reduce blob health and crowd control.
This is however quite radical and quite hard to implement, so I doubt it gets teated.