TBH, while i don't like the way they nerf demos, they are in a much healthy spot than before. I've seen them used with good results in recent games such as Von Ansten-Isildur vs Prodigy-Cpt Sprice finals.
the self spot gutted the only proper stock blob buster for Soviet (Katy CAN work, but is usually more of a force retreat than a blob buster) I would have much rather capped model kills at 3 per squad so it can inflict bleed.
As a building clearer satchels are better hands down, cheaper, on a squad you actually Want and because they are tossed Into the building the damage all the walls a bit better than planted outside, plus they can be used on the fly vs premediation (and again.. Are Cheaper)
Demos deal 160 more damage, but it takes 3 to kill an okw base, 3 satchels and 3 demos.... So save yourself 60 mu and just use satchels.
If demos are supposed to used as building ambush clearers they need to be cheaper still. It's like a building mine and 65mu for that is situational and over priced.
But all in all of demos were outright removed little would change atm