You can make the argument that Crawdaunt makes stall near-unviable because of the pressure that it puts on it. Crawdaunt has a near-full counter (watch out for Ice Beam) in Chesnaught. Chesnaught is a very good pokemon on stall in general, has leech seed to make up for the lack of leftovers, and takes very little from all of Crawdaunt's attacks (except for Ice Beam, but no one's running that yet). This isn't even over centralizing, this is just another threat that stall needs to account for. Last generation, stall teams in UU almost had to run Zapdos to counter Togekiss. Togekiss was kept in check back then, Crawdaunt can be kept in check now. A stall team that runs Chesnaught, which I would argue almost every stall team should, can be successful. For Mienshao and Heracross, one can run Granbull or Florges. Florges has Wish, Granbull can be worn down, but wish support from partners helps, and every stall team should have a Wish passer. These two pokemon are also fairly good on stall teams in general and can switch in over and over to Mienshao and Heracross without being threatened much. With every generation the number of threats that stall has to deal with increases. The methods from last generation won't suffice, which is why it is necessary for stall players to adapt.
Roserade is far better than Chesnaught on stall teams because, it has access to Toxic Spikes, it's arguably the best Keldeo check in the tier, it actually has a nice speed tier, can absorb opposing Toxic Spikes, and has a lot more variety than Chesnaught which really only runs about 5 moves (Hammer arm, spikes, leech seed, spiky shield, synthesis) Roserade can cover far more with Spikes, Tspikes, synthesis, leech seed, aromatherapy, leaf storm, giga drain, sludge bomb, hidden power, or sleep powder. I'm not going to sacrifice a tremendous amount of utility in Roserade just to use Chesnaught b/c then I'll get run over by other things (keldeo, suicune, electrics).
also suggesting granbull on stall to beat 'shao is laughable, and florges isn't a heracross counter.