Would like an easy way to transfer ownership of objects to someone else. Or for a super-user admin to be able to "take ownership" of a data model or dashboard. Will make it easier to deal with when...
I recently had this issue where a large number of data models were owned by a user who was no longer with the company. I filed a ticket with Sisense Support and they had it fixed by end of day.
There's also some good information in this post: Change multiple dashboards owner (sisense.com)