Can we get more people to choose the stairs by making it fun?

I don't want to be a wet blanket, but I'm guessing that once the novelty wears off, most people will return to their habit of taking the escalator.

I realize that this probably isn't a permanent installation, but someone did this in a more permanent fashion at a building near me, and people spent a lot of time playing on the stairs when they first went in, but now most people are back to using the elevator.

As many reasons as there are not to do this (some of which are pointed out in the comments), it's hard to argue with 66%. Sure, it's novel so that's part of it, but I think the basic idea of making things fun to get people to do them is great.

On another note, the easiest thing to do in that case would be to remove the escalator. ;)