MB-29222 allows for indexes to be redistributed in the cluster on every rebalance operation. There is an opt-in setting(
MB-41068) for users to choose this behavior.
It would be useful to allow on-demand ability for users to perform manual index redistribution whenever the cluster is out of balance e.g. some indexes get dropped, some indexes grow large in size etc.
This can be added as a n1ql command or a REST API.