CE/ORD - WorkSets that are in subdirectories?

I am still trying to wrap my head around worksets. I can get this far:

MY_WORKSET_LOCATION = S:/Project Files/
_USTN_WORKSETSROOT = $(MY_WORKSET_LOCATION)

I have a few problems, because this isn't quite right.

Our projects (which I envision to be our worksets) are actually stored in

S:/Project Files/2019/
S:/Project Files/2020/
S:/Project Files/2021/
and so on.

This is regardless of client, department, etc. Everybody's projects go into this structure by project number which is year-project so that each project has its own set of subdirectories. I am not going to be able to convince the entire company to change how we store projects because the transportation department is switching to OpenRoads.

In addition to this, I'm probably going to have to back into our worksets because that directory structure is going to exist for a couple months before I get involved into the project. All of the administration, contracts, proposals and other front office work that go into that project get set up before the actual CAD starts up.

What's the best way to manage this, from a configuration standpoint?