It looks fine and seems to have good synergy, my concerns would be,
Claydol's weaknesses not being addressed
Overeliance on Rotom for resistances
My use of Qwilfish on offensive teams like these typically disappointed me, because he is virtually a 6-5 advantage for your opponent and offensive teams cause limited switching
Our battle was a mess. I've been playing against so many lazy bog standard teams (not yours) my interest in the game has diminished greatly. My Registeel was a feeble attempt at a hard counter to Venusaur.
I'm personally finding Venusaur to be so centralizing that I'm going to just ban him and not use Milotic myself to be fair.
I'll be building a brand new team from scratch with Venusaur out of the way in mind.