I don't see anything special about the subprojects, that are simply different applications, most other BOINC projects have that and the standard BOINC server status page has been able to display the per app availability of tasks since many years now, like for example on Milkyway or Rosetta or Universe or whatever else, just scroll down to "Tasks by application".
Einstein has extended this a bit with additional per app information, but no one is asking here for that and that's not necessary if someone just wants to know if tasks are available for their selected applications.
Moo! has also a bit different way to display the info, since they have different sizes of tasks for the same application, but that's also not necessary here.

and right now, I think any time and energy for an effort to get a page like that put together are at the current time better used to fix the current problems...