Personally, the poison combo is way overhyped. Yes, it does an instant 30 damage, but as you yourself have stated, poison rarely sticks.
What this means is that, in decks that don't actively poison, Laser effectively acts as nothing more than a triple pluspower. The stadium sticking or not makes no difference; you only have four lasers to use, which means throughout the game, that stadium is useful for only four turns most of the time.
Also, I think you should mention how, with the printing of escape rope, nulling that poison effect is easier than ever, ESPECIALLY with keldeo, since you can rush in AND use escape rope for a free retreat (a combo I'm surprised hasn't been mentioned so far). Catcher and switch counts will drop to accomodate escape rope who functions a bit like both, particularly for decks that don't really care who you damage (e.g. rayeels), so it's inclusion must be taken into account.
That said, I'm kinda excited about darkrai/keldeo using a full set of ether and lunatone for super speedy setup. Throw in dark claws and lasers and you have a very mean attacker.