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Aegislash either needs to go or KS does. With KS, Aegislash effectively has 150 offence and 150 defence, it makes it very difficult to deal with.
I wouldn't mind a KS ban, Aegislash is very manageable without it and still be able to control the overpowered bug's and fairies.
Something for the...
Would you be interested in a 5IV shiny L1 Squirtle modest raindish with dragon pulse, aura sphere and water spout for your Tornadus.
Also shiny 5IV L1 Staryu Natural cure for your Thundurus.
And shiny 5IV L1 Starly reckless with double edge for your Rotom wash.