The bin creation UI should be something like the general ticket edit UI, and rather than creating a SOLR query, it should create a list of mongo filters, and bin's should be based on mongo queries.
Our current "saved search" implementation should continue to exist, but for "realtime" buckets it should be deprecated in favor of "filters", which will actually be realtime since they are based on mongo data, not SOLR.
Reasons:
The UI should allow multi-select for $in operations, which should be a sufficient replacement for most OR uses.
We'll need to add several indexes for a lot of the common filters, possible examples:
Diff:
milestone: feb-21 --> backlog
Description has changed:
Diff: