[Maps] Global draw filter option #35482
Description
This feature request is closely related to #33658 and #33686. The referenced issue and PR is for index / field specific bounding boxes. I'd like to take this feature further and introduce an all encompassing filter. Rather than defining the index pattern and field, we simply filter on all enabled index patterns and geo fields used in the map. This could simple be a very complex query across multiple index patterns and visualized as a pill with a custom name.
I realize there may need to be changes in the kibana data access model (cc: @stacey-gammon) and that more discussion is needed, but I wanted to open an issue to make sure we kept track of this request. I imagine it's what the majority of our community will look for when drawing their first filter.
One interesting option @nreese mentioned is that each index pattern define a default geo_point or geo_shape, similar to the default timestamp. I like the idea, but the more I think about it, I feel like we already have all this information defined in the map. We know exactly what index patterns and fields to query and filter on.