this is a neat idea!
But as I said in previous posts I can't see the game revolving around this IR board. Much like Rack N' Roll didn't revolve around the spider foot
I see the being useful but not nessacary!
And through testing, my biggest concern with this piece is interference. If the transmitters can move, they can interfer with one another, your bin idea could work but, they would have to be stationary, and not pointing at one another lol.