Basically, the big question now is either:
Ninetales ex
Milotic
Each have their pros and cons. Ninetales fits the theme of the deck with GOW advantage early, and provides HUGE damage potential every turn. Yet, it gives up two prizes, is weak to Blasty and takes 4 turns to power. Milotic has healing, works well with the Briney's I already play, does nice damage, counters Blaziken, but it too, takes 4 turns to power unless I DRE, and Feebas is a worse basic than Vulpix. I think this decision is going to depend mainly on metagame. Metagame right now would suggest Milotic, but personally, I think Ninetales is better.
Only testing will tell.
Dave, as far as Cloyster goes, yeah, I thought about that too. Double Bubble is REALLY annoying. I think all in all, Ninetales or Milotic would be the better choice. Also, as far as Steven goes, I find myself using 2-3 per game EVERY game. So, I mean, even if I only use 3, I'd rather have 4 in there so I can draw it with higher percentage, and using one, means I can VS Seeker for it. I don't intend to use them all, but I have better percentages of being able to play them if I need to.
EDIT: Also, YoungJohn has posted a Salamence/Poliwrath deck as well, I encourage anyone checking this post out, to look over his too, because I like the idea myself. EDIT
~Jim