Hi ! Really glad you like the team :)
Don't feel guilty about using it, that's the point of a RMT, you guys all feel free to use it. I've added the export to prove my good faith !
And no, don't worry, Sleep Talk on Heracross is not gimmicky and weird, it is a pretty good idea that I myself have considered.
And yes, there is not much Pursuit does, as I said it actually serves only one and single purpose : killing Chandelure. As for me, Chandelure seemed more annoying in early game than Roserade, but if you feel that you'd rather have a solid switch to Roserade's Sleep Powder and don't want to be Pursuiting Chandelures, Sleep Talk is certainly a viable option.
Then about Rhyperior. I always felt like Dragon Tail was more of a bonus move than anything. I've been using it only when I was in a really good situation and was ready to sacrifice it. Rhyperior's Earthquake does make quite a lot of damage, but you are right again, it's not the move you will be using the most. Although, you sometimes need a reliable way of making damage, without being scared of Rock Blast not hitting enough times, so I wouldn't use it without Earthquake. But if you are not convinced by what I'm saying, then use Megahorn over Earthquake, not Substitude, it would give Rhyperior a way to damage Bronzong and that would be extremely usefull and would definitely be the move I would run if Rhyperior could learn 5 moves.
Thanks again for your rate, I hope my answer was explicit enough :)