I'm not, it's going to be OP as all hell.
I beg to differ, you'll see. No point in theorycrafting.
Obviously HMGs are not the only option in the face of blobs, and some blobs can't be stopped by a single HMG (It wouldn't make sense if a single HMG COULD stop any blob now would it) but overall HMGs are a desirable cornerstone of one's army. For me personally, I've run US and Brit companies without any HMGs and done fine, I can imagine Wehr companies doing fine without HMGs as well but from my personal experience I would conclude that (at least as wehrmacht) you're making it harder (increased micro intensity etc) on yourself if you don't use HMGs.
You know why US doesn't "need" its MG? because it sucks. 3 volks squads can usually kill a US mg while suppressed. In fact I use my US MGs as a counter to pumas and light vehicles more then I use it for suppressing.
One thing about HMGs is how incredibly powerful you feel as US when you manage to snag an MG42 or two. When I get one I protect it with dear life! Nothing makes a US player smile more then seeing grens and volks get suppressed instantly!