Ur post showcases teams of a variety not seen anywhere else in these forums and they are coupled with analysis that is written by someone who is not eating meatloaf in moms basement. excellent work all around. This community DESPERATELY needs this type of input and content, namely content insulated from the incessant poketuber braindrain.
Keldeo + Talonflame doesn't work because you need to run Starmie over Keldeo, Keldeo + Mega Medicham doesn't work since Keldeo is virtually a waste of a team slot, but Rotom-W + Mega Medicham does work.
Other than that, it's terrible defensive typing and dissapointing speed leave it in the dust. I also would not reccomend running Keldeo, as Mega Medicham benefits your team so much more. Mega medicham does, however, almost requires a slow volt switch user to be paired with it, which is where Rotom-Wash comes into play.
Rapid spin Excadrill wouldn't work with Talonflame. Rapid Spin Excadrill works as an emergency hazard remover, and is only useful on teams that don't exactly need hazard control. Talonflame requires a full-on hazard remover. I wouldn't reccomend running Breloom. It only works on specific teams that need an answer to Bisharp and Weavile that isn't a mega or Keldeo.