If you could explain why you chose certain pokemon and when or how they are used in your team that would be great. But from what I can see, you are going to be switching a lot. So, if this is not in game but used competitively, you may want to make use of a spinner. With 3 Choice users, your opponent will be switching in counters every turn, causing you to switch out. This is mainly an idea for Honchkrow because the others resist SR, but Spikes will rip your Rampardos and Wormadam apart.
It is actually pretty cool though. I like the Wormadam idea because it may actually be useful. The Mesprit idea is a little 'iffy', but it could work very well if you predict correctly. The Latias idea is done better with Cresselia IMO, but that is just me. I can see why it looks better though (with the instant recovery move), but Restalk Cresselia with Psycho Shift and another move of your choice is bulkier and, for the Status Abusing idea, easier to use (you can Psycho Shift Sleep status as well).
Water-types will stop your Politoed dead in its tracks. The problem no moveset from Politoed that follows your idea can avoid being walled. I would say Waterfall and Brick Break, but Venasaur and Roserade wall that moveset. Just figure out what is easiest for you.
Nice team, good luck battling =D