With its new ability, Thick Fat, it can handle Sun teams too now
Sorry but that's just wrong. It does very well against Sun but not because of Thick Fat. You still can't take a Fire Blast in the Sun, you may be able to tank a Flamethrower from Ninetales but that's probably it. Anything that is not a bulky water won't take a Sun Boosted Fire Attack well. Overheat from Choice Specs Heatran OHKO's all Dragons not named Latias/Latios in the Sun after SR and that is although it is resisted. I also don't see Mamoswine taking any Flare Blitz soon, probably a Sun Boosted Fire Punch from Dragonite but that's about it.