It's good, better than I expected to be (from reading your decription).
It could be improved, than there's a question if it's worth it. You could add lots of things to make it more fun, challenging, but in the end it'll be always a game about making wooden boards, which doesn't sound like a lot of fun. I believe it can have extra value for your co-workers and for that I think it's good enough as it is. I don't wanna discourage you, just my opinion.
I've made 3 boards in a minute, is it possible to make it in real?