The next step is nothing, because that is the only sensible option.
To try to resolve the tidal flow by trying to move bikes around would be impossible with the current scheme.
Moving vast numbers of bikes from one point to another is pointless and expensive. It would be cheaper just to pay everyone’s taxi fare.
If you want to resolve the tidal flow issue, then you would need to bite the bullet and come up with some radical (and unpopular) changes to change the behaviour of how people use the bikes.