Thanks everyone for the congratz.
Cho was always strong, just unreliable. Now that Rupture has a definite timer, it's a lot easy to hit so you notice them doing a lot better. The new legendary skin helps too.
I've also noticed the bruiser trend, since it keeps me from playing something other than a tank in the jungle. A little annoying, but it's got me playing Skarner and Cho'Gath again so I don't mind.
Not much help on the Trist side since I don't play her often and the only carry I play that actually makes it to late game is Kog'Maw, so I buy a Madreds if I feel I don't need the defensive item.
So yeah, I'm playing Skarner again. I always loved him and now that I'm playing him again I'm going to try to perfect my Wit's End Skarner build order. I feel he does better and more consistent damage with Wit's End since his spells come up that much faster. It also means I never go into a team fight without my ult.