I want to help you! here's my opinions! First lets start off with your Azumarill, Choice band? I could see that working out, but did you throw belly-drum in as a filler move? because that would lock you into that move! might i suggest Slapping a sitrus berry on it so you can heal back up as soon as you use it? oh, and if you really want to go choice band, then here's a pretty good filler move for it! "Knock off" Its a physical Attack so it gets boosted by Choice band, and it knocks off the opponent's regular held item! plus, it would give it decent coverage over Ghost, and psychic types!
Then, lets move on to weavile, first off, i see NO COVERAGE to fighting types! thats a huge No-no! try exchanging low kick for "Aerial ace" and then run the calculations. Weavile with 252 EVs on Attack, Boosted by Life orb onto a Hitmonchan does minimum 82%, then you throw in Fake out as your first move and that does 22% Minimum - A gaurenteed 2HKO so might i suggest a whole different moveset? Fake out / Ice Shard / Aerial ace / Swords dance @ Focus sash. This would mean you get to set up a Fake-out, Swords dance, Aerial Ace - Combo onto any fighting type and literally OHKO'ing them all!
Then Finally - Aegislash. Why quiet nature? It lowers your speed! unless you plan to run Gyro ball, I would go With maybe Modest or even Rash? If your going for a mixed attacker, then you need to mix the EVs too! Try this set. Aegislash @ Weakness policy, EVS 252 HP 128 ATK and 128 SP.ATK. then you could still outspeed several pokemon! You could also run a Rash or maybe even naughty nature!
Those are my Opinion's and i put a lot of time into them, so please don't take this as an insult! i'm actually trying to help you :)
