Then no, probably not. I don't know for sure, but I would guess the majority of Val's player base at this point didn't come from CS. Don't think they would start playing it now.
128 tick servers is good, we'll also see about the performance tho, they better not fuck up with the engine and stuff. Still, they're gonna need a lot more than better servers and matchmaking (not like it's gonna be better than face it anyway)
I personally play both of them equally right now, but I’d probably play 75% CS and 25% VAL if they get a FACEIT level anti-cheat and 128 tick servers, and just a better ranking system in general. Only reason I play VAL is because of the superior matchmaking system.