Dashboard: todos by #tag (view?)

Intending here to just get a conversation going about the following for consideration down the road:

Right now, Dashboard sorts tasks by priority and puts them into two "Today" sections, each with prioritized items.

One of the things that I have heard frequently from people is that they like to have certain tasks to work on in certain blocks of time. It may be that they have several clients and they have timeblocked an hour for each client. Or it could be things to do at #work or #home or whatever.

It feels to me like it would be nice if there was a dashboard view that had items segregated by hashtag. So, I could see all the #ClientA items together sorted by priority, and when I get to my ClientA timeblock, I just work through that list.

For example:

ClientA Tasks:
- [ ] !! Send invoice to #ClientA
- [ ] Work on proposal for #ClientA 

Questions:

Is this an option in the xcallback and a "button" next to the "refresh" button switches into that view?
Is it a setting to draw this way by default?
What to do when a task has multiple tags?
Should it be just #hashtags or also @mentions?

Thoughts @jgclark ?