Regis/Zahal ruled for soltemple.
They will not drop the loot associated with soltemple quests until the correct time. If the spawns shouldn't exist at all
until that time, this will need to be revisited.
He should exist for the cutthroat rings quest, yes?
Aside from accepting the turn ins for the soltemple quest, should he spawn prior to that time?
Will not spawn until soltemple.
Should already not spawn until soltemple.
This can be revisited with further research/evidence. Fixed, for the meantime