Imperial Rump States / First Order Purges
With the prevalence of the Imperial Remnant in the early New Republic era (and the unwillingness of the Centrists to actually confront them), is it reasonable to assume that there would be whole systems or more would be controlled by Imperial warlords. This occurs in Legends, but is also alluded to in Canon too.
But with this in mind, I always found it a curious notion that, if this were so, the First Order would want to eliminate the competition. The First Order sees itself as the sole inheritors of the Empire, and all others are pretenders and traitors. Pre- and during the Resistance War, it seems likely that First Order Intelligence operatives would contact Imperial Remnant enclaves with a stark choice:'
Join the First Order, or die.
Many a former ISB agent or Imperial Naval officer were likely assassinated, or quietly spirited away in unmarked freighters to the Unknown Regions.
What say you?