das
Regeneration In Process
Muscovite succession was a family affair, and it didn't get fixed completely until the family died out (actually, even after that we still had the Pseudo-Demetrii) and the smaller and less quarrelsome Koshkiny-Zakharyiny (boyars rather than princes) took over. All that anyone could try to do until then was to limit the familial appanages as much as possible and kill/imprison all nearby relatives in brutal ways, usually preemptively. Though, I suppose the fact that this was actually doable would speak for it no longer being a Mandala state. The earlier Rurikid principalities definitely were closer, but tended to devolve and disintegrate in place of having dynastic shifts, though those happened too.