User annotations of tables, columns, etc.
Allow non-admin/author to annotate objects in the explorer pane.
The use case is a consumer of data prepared by somebody else. The consumer has only read/query access. Reality is that schema get convoluted quickly. The names of tables, functions and cols aren't self-explanatory (quite often). Worse, real example, table1.RsrcId and table2.BladeId might mean the same thing. Though, only the consumer of both tables (possibly from different clusters) would care.
Therefore, allowing users with read-only access to annotate would be instrumental. Said annotations should be share-able.
You can change ‘docstring’ of function/table/columns (look for control commands that look like:
.alter table|function|column docstring …