Sub+Nightmare definitely was the "star" play this past week, punishing two features of the current metagame: leaning heavily on ST Snorlax to give you "safe" switch-ins, which is normally quite reliable; and depending on a Thunder Zapdos as one of your main answers to Waters, which you can often get away with. Granted, the latter is less common today than it was 5+ years ago (double electric builds and Thunderbolt are currently more popular than they were then), but the former is definitely a surging trend. And sulcata happened to employ both, poor fella.
There was also an awful lot of Moltres usage. Charcoal Moltres usage. And they both won! In one game (vs Conflict), it actually was probably the reason for the win! Against Charmflash, the Rhydon was definitely the standout Poke. Speaking of Rhydon, both Moltres teams featured it. I suppose the concept is that they both converge on bulky waters (e.g., Suicune), mutually softening them up until, in tandem with Spikes, one of them is able to kill? In the end, though, it seemed Rhydon + Spikes, sans Moltres, was enough to do the job in dice's case. Maybe there's some other idea behind it, e.g., portfolio-diversifying against teams that bring, say, Exeggutor.
Apart from that, Mr.E managed to win with some stall concept featuring Vaporeon and ML-pass Umbreon (sans any kind of cheese, e.g. Confuse Ray). Despite his opponent bringing Double Electrics and Double Phazers to shut it down. Something funny happened here, and it seems to have been kicked off by a combination of hubris and luck: FOMG switching Zapdos into a crit Ice Beam from Cloyster.
Also, gorgie ended up slowly decaying in the face of Thief usage (and a lucky freeze, but Raikou's erosion honestly seemed to be a bigger factor). To be fair, those slower Spikes-dependent teams with Missy spinblock that lean on offensive Snorlax and Roar Raikou seem to be particularly vulnerable to Thief + Spikes. I learned that against spies in my first full SPL season, that was a gut punch lol, and so I related to this loss probably more than I should have.
I also noticed, overall, a lot of Skarm usage this week. And no Golem! After a couple weeks where a lot of the teams had me thinking "boy, if somebody had brought ST Heracross or Marowak things sure would have gone sour", it seems the SPL field collectively had a similar revelation. Or maybe it was just chance / reversion to the mean / an attempt to gain an edge by throwing the opponent off one's typical teambuilding strategies. KratosMana even brought Curse Hera this week, in what ended up being a pretty solid matchup for it, and with CurseBoom Lax to support it in case of Skarm, to boot! Moltres just ended up stealing the show.