I think it's really cool but it might not be necessary for a lot of rides. For instance any ride where the wheels are covered obviously should not get them. But I don't think the park would invest in that for a ride like that to begin with. It would be great for Intamin coasters. I think to complement it though, and this is just my opinion, but the trains with the wheels should also be lit up so it isn't just the wheels, if that makes sense.