Okay so...I feel like at this point, the list is pretty stock. You have a bunch of pingers (autotread, cabal scavenger, tripwire grenadin), their payoffs (throne room, tormented crown), and ways to enable them (nico, whispering wind, snowstorm druid, rat cage).
If there are any "tech" choices, it's the combination of street urchins, passionate stonehammers, and new card on the block, Rift Siphon
that you want to keep in the list.
In the market, most of it is set in stone--you want at least one negate, the invasive species, and probably two pieces of removal (perma, open contract), though it may be argued that one might want Check Raise instead of the flicker.
In any case, I've been jamming this list (and similar) the past couple of days, and it's just...really fun. I've also been highly, highly impressed with Rift Siphon in that not only does it help snowball something like Cabal Scavenger (t1 scavenger on the play -> rift siphon starts snowballing in a HURRY), but in that the power bursts often let you muster Snowstorm Druid's stun ability, turning her from a random humbug that very occasionally procs a stun into an eye of winter that consumes no resources.
At this point, I'd say FPS throne room is probably a solid tier 1 deck, and with Rift Siphon, there are plenty of 1-2-3 draws that one can be happy keeping.
Ultimately, the tough part with this deck is the mulligan. Watching Applechips play it a while back, I remember the philosophy was: "reasonable keeps are out, BUSTED keeps are in. You want to be doing something absurd with every hand."
So yeah, know that this deck exists, have fun jamming it, and if DWD's going to swing the nerf hammer, then maybe it can address other problematic play patterns as well ?=P