Can we talk zhonyas, banshes and qqs?

one of the main topics around atm is making assasins healthier for the game because a guy who oneshots a carry and runs away is just too much

but the more i thinnk about the current changes that those assasins undergo mainly the silence removal and stuff the more i think that riot will make them healthy at the cost of making them unviable for any type of play

the main thing that defines assasins is the fact that they usualy use one assasinating combo in the entire fight, then they spam what is off cooldown but blocking even one of the skills that this assasin uses results either in failed assasination or death of the assasin, rarely in even getting a kill

now the problem i find is that items which literaly delete some assasins like zhonya and mercurical scimitar, are made to be good without their assasin killing passives, zhonya for instance gives you 10% more stats than you paid for and the active on top mercurical scimitar is like 99% cost effective, and banshe is 160% cost effective once shield is popped (hp regen)

thats why i would like riot to ballance assasins both ways because from one side we have items that literaly remove the assasins from the game, from other side we have meta that is hungry for assasins (squishy champions carry all the damage) and looks for the ones who overstep those items (lb and talon qq)

there are of course guys like zed who scale so insanely that they can burst down a tank but he is picked mainly for splitpushing insteadd of full time assasinating of the carries, and fizz who has no cooldowns meaning that he can just wait till zhonya ends