Hybrid boss respawns?

[Castigate]

You could try a hybrid of the current system and simulated repops.
My idea would be to group certain bosses to the same spawn timer, for example make it so both Trak and VS spawn at the same time every time, with the varied spawn time reset each time either was killed.

This would probably work better with the 7 day spawns, for example having PD, Talendor, Inny, and Vox all spawn at the same time would still allow for competition which favors the better guild, but also allows others to get some spawns. Also it could allow for some amount of timer trolling if people forgot to kill Vox (or Yael) for a few days.
It would be a less sweeping change than full repops only, and also serve as a test to see if full repops would be the better route.

I can't pretend to know whether or not this is even possible to code, but it seems like a good idea.
Any real number/combination of mobs would probably work, although I'd think at least one of the groups should be solely VP dragons.