Back to the topic of Stairway, its been said before that the only reason Dave would post something like that would be if it was impossible to guess anything about the game from him. A stairway is obviously too obvious a reference, so if there are actually stairs in this game, I’m going to buy everyone a taco.
Personally, I think the reference is to poke fun at the ridiculous amount of lumber that we have to buy… you know, “And she’s buuuuyyying a stairway, to heaven…”
Besides, with all this talk of Stairway, has it ever occured to anyone that maybe Dave just likes Led Zeppelin?