I would think, if Necros is trying to do his own thing, he should sway one of the Moff's on an outer planet of the Empire, away from the hustle of Imperial Power and Sith oversight. He might sway the Moff to his way of thinking so that the Moff bankrolls Necros' building an army. Obviously the Moff thinks he can control Necros and Necros is merely using the Moff.
He goes to some unknown planet... just because?
Perhaps this planet is near the borderland protectorate or somewhere. He sees Damalis at a starport or merchant hall or something and "goes weak in the knees or just wants to bed her.. or whatever..". What would Damalis be doing there? Securing a new source of dies or fabrics or whatever for her store on the Astoria.
Necros tries to have his way and she refuses his charms (such as they are) and he goes apeshit and stuff, enter Irtar and a Jedi base that happens to be on the same planet.
Part II:
Darth Necros, seeking retribution against Damalis and Irtar, leads his 'Army of Darkness' built on outer TNO world, to the world where the confrontation took place at. Although the two are at the Jedi base right now, Necros leads an invasion of the planet and brutually subjugates it, killing most of the populace, and capturing intact the remainder to serve as slave labourers. In the meantime, Damalis leads the Jedi from the base to Necros for a taste of his medicine. They eventually arrive back at the planet to see it deserted, except for the corpses of the populace and the ruination of the planet.
Then he obviously is not out to subject the planet. And he takes the "slaves" with him? where? With what? How many? Slave revolt on his starship anyone?
The Galatic Coalition, appalled at what has happened, points fingers at TNO. Simon Kaine responds by dispatching his vaunted Jedi Corps to take care of the threat of the Sith. This concludes Part II.
The Galactic Coalition is always pointing fingers at TNO. This would not move TNO to act. If TNO interests were in jeopardy however, TNO would be there yesterday.
The Jedi Corps is not mean't to be a direct contest for the Sith. If one on one, the Sith will win everytime. The Corps strength is in their numbers and they would typically already on the planet that Necros is on.. just keeping tabs..if it's a part of the Empire. They do not directy interfere with the Sith but merely observe them. There may be rare instances of Corps taking down Sith but that is one sith and many Corps and probably because the Sith was getting out of hand disrupting the population. The of the Corps like the gestapo... They aren't the military.
Kaine would first order the Moff to handle the problem in their own backyard. If the Moff cannot Kaine would order the military (Dark Troopers or whatnot) to handle the Sith problem, if not Vance or Lup to take care of their own.
Again, unless this was the Sith Order's (as a whole) rebellion against the New Order, then Necro's acts would have consequences on all Sith Empire-wide.. and then I could see him building a powerbase under Lupercus protection on Corellia.
But if this is just Necros being Necros, build his forces on the outer portion of Empire.. hidden..
Part III:
1. The Jedi Corps would lose which is why Kaine would not hurl them against the Sith. Now, I can see Necro's troops perhaps defeating the first force that Kaine sends. That would anger him as well.
But he would not call on the Coalition to solve the Empire's problem. Especially not to Corellia. If TNO is loosing it's hold on one of it's Sith, they will take care of it in their way and as quietly as they could.. perhaps sending Necros and company to the nearest concentration/murder camp.
And Kaine, realizing the mistake he made in using the Sith for TNO purposes would probably begin a program to systematically murder the Sith in the Empire in their sleep to cull their numbers into something more controllable.
