Roserade- BAN. Roserade is still too much for the tier. I feel like people still continue to underestimate Leaf Storm and Bomb from 125 Special offense, that hits like a truck. If we had better steel types I might feel differently, but Roserade can simply click Sleep Powder on all of them but Ferroseed or set up hazards on the switch.... or set up hazards while they are sleeping and go to the plentiful steel switch-ins that are on teams these days. Because of this, the Roserade user can easily maintain momentum even with counterplay on the field. Offensively Rose is bad enough, and the cherry on top is that Roserade gets plenty of opportunities to switch in the field for relatively free. In this meta, pokemon like Palossand, Vaporeon, Regirock are defensive necessities to prevent other pokemon from sweeping teams and Rose can get in on them for balance easily. Rose does have common counterplay in terms of faster offensive pokemon but it does entirely too much work every time it comes in.
Virizion- SUSPECT. Virizion is a great candidate for a suspect test. Technically Virizion is a pokemon that is very difficult to truly counter. Its fantastic coverage and ability to setup makes it able to take on pokemon that should have an advantageous typing vs it. With the introduction of Leaf Storm to its movepool, it can run a potent mixed set as well. Whats holding me back slightly is I don't feel Virizion in practice is as stupidly powerful as it has potential to be, and I haven't seen too much evidence of it totally dominating teams either. It's not exactly like Roserade where you can basically just click buttons-- especially if you are running SD, you have to pick your setup wisely as we have no shortage of revenge killers of Virizion. Another thing is seeing some trends in increasing commonness of some pokemon like Weezing and Whimsicott which can switch in pretty solidly and are good meta picks in general. And then there are pokemon like Talonflame, Ribombee, Scarf Mesprit or Scarf Toxicroak who are offensive checks that prevent it from clicking easy buttons like it wants.
Toxicroak- DO NOTHING. Toxicroak is a very strong pokemon but all of its sets have adequate counterplay in the tier. Swords Dance and other physical sets are consistently checked defensively by top pokemon including Weezing, Palossand and offensively by a list of threats too large to list. Nasty Plot sets have less clear defensive counterplay but lacking the immediate power of Life Orb Gunk Shot it is hard to see it as too overwhelming for the tier. No matter what Toxicroak set you run teams will naturally have ways to pressure it without too much problem.
Archeops- DO NOTHING. I don't view Archeops as anything more than a strong offensive cleaner. Despite Archeops having access to Heavy Duty Boots now, Defeatist is still a hindrance because you if you run Dual Wingbeat you lose your amazing 110 BP Acrobatics. Archeops is powerful but not overwhelmingly so unless you run Choice Band, which is not something I can see being broken. This means that even despite Archeops speed and coverage there are lot of general fat mons like Regirock, Vaporeon that can tank hits, and pretty much all Choice Scarf users and priority neuter it. Finally Archeops brings very little defensively to a team so it is not something you can just throw on.