OP they can't do that because the cards aren't in the client yet (i.e. the Hearthstone program on your PC/phone/tablet).
If they put the cards in the client then they would be datamined and put up on websites before officially revealed.
They will be soon though and lets hope for a good brawl next week :)
Also most people reading your post won't know what a GCSE is :) Mine were so long ago I can hardly remember myself.
3
Have yet to play the deck, but to me, if we're really going in on beast synergy, I'd much rather play Stampede than Helpless Hatchling . I mean, obviously midrange decks want to keep the tempo up, but a 1 mana draw a bunch of card seems decent, or at the very least better than the hatchling.
4
If you are facing mage, druid, or rogue, they can remove this the turn after you play it. And, in general, 2 health is much more solid that 1