I wouldn’t consider them to be OP, as it would still take a little time to pull out/ put in the wheels, would be a lot faster than changing to a different pair of shoes. They wouldn’t allow you to go as fast as an actual pair of rollerskates, and walking around with wheels built into the shoe may be a bit encumbering.
Another thing I would like to see added is reprogrammed teleporters to get from point A to B instantaneous. Allowing raids to be completed much more smoothly without all the backtracking. Having a teleporter in your base (even better, your vehicle), then placing a second teleporter anywhere else would be all you need, that and a high computer/electronics skill.