http://www.smogon.com/forums/threads/earthshakers-take-six-feat-mega-gyarados-2000.3493347/
http://www.smogon.com/forums/threads/emperor-core.3493379/
Those are two rates I just think weren't my best in any way. I usually suggest amoonguss over other grass types on offensive teams because it helps with momentum and stuff, but in testing once its put stuff to sleep its kinda set up bait. However, i cant really think of anything over it, and when i suggest changes i usually try an keep the structure relatively the same (grass to grass, azu check to azu check, etc).
One thing, I'm no XY expert, the metagame being what it is at the moment, it's pretty annoying to rate. It's gonna be simpler once things will be set. I can still give you some general advice.
Ok the first rate is pretty sparse in terms of content, even if it doesn't mean that the rate isn't good.
I agree that Azumarill can be quite the threat, but you're not gonna put Tentacruel or Amoonguss in every team. Every member of this team outspeeds Azumarill, so you only have to make sure, that these members can hurt it hard enough.
Greninja is definitely the set-up bait here. Speaking of Greninja, I don't see the point of playing both MeGyarados AND Greninja. It seems really redundant and probably unhealthy. So instead of trying to fit a hard counter (which doesn't work that well in this team obviously), you could have tried to kill to Azumarill less switch-in possiblities. This way, you soften the weakness, but you don't break the team dynamic.
You were obviously right for Celebi. This set is atrocious and doesn't work. I could really see a bulky pivot be here instead, with Baton Pass.
So yea, imo Greninja shouldn't be here (just watch how he struggles to find a worthy set), Celebi set needed to be changed. Also, Dragons able to get rid of Excadrill (they almost all can) are definitely threatening, same goes for physical sweepers. WoW+Twave on Scarf Rotom-H is meh and Trick/Coverage move should be used instead. The Chomp set is also really weird, this should be at least a coverage move like Fire Blast instead of Outrage.
You could have considered a Gourgeist (can definitely check Azumarill) over Celebi, and a Fairy over Greninja since it solves almost any issue I can see, and of course, improve all the weird sets. That would have been my rate I guess.
The second rate.
This one looks well constructed, especially compared to the first one. You did a clear analysis of the team, and of its purpose : this is really good, keep doing that.
You did raise a good point with Aegislash, the mixed version could be annoying.
I didn't like the AV Landorus-T at all. I don't know what is the exact point, but if it's only about taking HP Ice from other Landorus-T and beating NP Lucarios well.. You could simply invest in speed for that, and have HP Ice on your own. Landorus-T doesn't have any useful "Special resistance" so you're almost never gonna use it to take Special hits. So yea, in my opinion that's a terrible idea because Landorus-T is NOT supposed to take any special hit.
The other change seemed fine, even if it does not fix the Mixed Aegislash issue at all (the physical one was already pretty well covered by Landorus-T). Granted, AV Landorus-T helps here.. surprisingly enough... I still think it's a subpar set but I may be wrong.
From what I see, this team basically relies on Landorus-T/Rotom-W/Gourgeist/Talonflame. All together, they share an insanely good synergy. He just tossed Manetric and Empoleon here for the show off. Imo, if you want to improve the team, putting MegaKangashkan somewhere would be cool, it could totally fix the Aegislash mixed issue since Secret Sword doesn't hit hard enough (and so you don't have to run meh AV Lando-T). I'd even try the Wish/SeismicToss version because it could fit the team quite well (all the walls have no reliable recovery : RotomW/Landorus-T/Gourgeist). As for the last pokemon, maybe AV Excadrill to spin for Talonflame, while being a decent special sponged if needed. Or just a better Defog user.
That could have been my rate I guess.
However, he prob didn't want to get rid of Empoleon and Manectric.
I hope that I helped, keep the rates going.
PS : Don't make someone play Stone Edge + HP Ice. It's literally atrocious and one of the most redundant coverage combinaison when paired with Earthquake. It could help against Flying/Bug + Fire mons or Flyin/Levitate + Water, but they are already covered by Rotom-W, or RK'd by TalonFlame. So yea, don't do that in general.