I can understand how Switch/Warp Point can come in use, but they don't clear the damage like SSU does and even though there aren't too many sniping decks right now, I feel SSU is more all around useful than switch/warp point.
KG: I don't see 4 Arcanine working. Arcanine is not the pokemon you run 4-4 of and nothing else. It has only one attack that costs 4 energy. That means that if you T2 Arcanine, you can't attack until T4. If you use DRE's, you can attack T3. And then the kicker is the effect of the (1) attack that does 40 to itself. Any Kricketune or Blissey deck will be able to follow up with the 60 damage to KO the Arcanine with the 4 energy on it. You would have to time the Arcanine just perfectly for it to work well enough, and any other instance would just have the arcanine dieing and all your energy (DRE, fire, holon ff, etc) going to the discard with it. Now that isn't all bad with Blissey being able to bring back basic energy, but it does lose you momentum. You have to start over damage-wise and start powering a new pokemon. The only way I could see 4 Arcanine working would be if you had a deck based around it with pokemon with FireStarter that could power Arcanine easier.
Arcanine just is so limited because of it's one attack. If it would have had any other attack added with it, it would be so much more playable imho.
The 120 for 4 is so tempting, and the power makes it even more tempting, but it's very much like a bomb. It explodes and does massive damage and then just crumbles into ashes.