Okay, here are some;
Why would you keep a Focus Sash on Bronzong? It can generally take hits from anything not called Fire Blast. Also don't put EVs in attack as much as HP. HP is more important. Also give it either Leftovers or an Occa Berry if you're worried about fire attacks.
Cradily is alright, but I highly recommend an actual attack over Confuse Ray, because you can easily be taunted and immediately lose the stall war that he's designed to take part in.
Metagross is alright I guess. No need for Bullet Punch if you're running trick room, though. I mean, really. Meteor Mash, because you don't need priority if you're going first with Trick Room on the field.
Crunch is a really good idea on Hippowdon. I have no complaints about that set.
I don't see the point of Wing Attack on Scizor. If you need a flying type attack for some reason, opt for Aerial Ace. As a rule, though, Pursuit would work much better. Also, being that this a Trick Room team, again, you might want to opt for something with more power, such as, perhaps, Metal Claw, which goes up to 75 power with Technician and gives a chance to boost attack, or even Iron Head, which doesn't hurt with its 30% flinch chance.
No complaints with a standard Rhyperior, though Rock Slide tends to work well in Trick Room; 30% flinch chance, and the high hit rate helps when you don't need too much extra power. I mean, this is Rhyperior we're talking about.
Pretty good as a whole. You might want to invest in something other than Bronzong to set up Trick Room, or you're done when it dies. I might suggest Banette, which acts as an effective, if a bit standard, Trick Room Lead.