okay fair enough but I argue that it would allow ships like torpedo spheres for Zsinj, and custom CR90s not the regular ones.
Both units that already exist for another faction. The modified CR90 would really just give it a tractor beam ability, which isn't super useful for a ship of that size in the first place in Sins.
Strong relationships with other factions but not PA
I don't think there's any basis on which to say Zsinj is a diplomatically focused faction. Hell, he made everyone hate him so much the Empire and New Republci were willing to cooperate
against him. He was public enemy #1. Kaine hated him, Teradoc hated him, the Empire and New Republic actively destroyed him. Screed allied with him, but they were rivals, and Zsinj had him executed.
Zsinj's Empire focus on consolidating its power than seizing the moment to strike at his enemies.
What does this actually translate to in-game? More tactical slots? Lower ship numbers?
Benefits less form culture, [...] industrialization, and Tighter controller.
This is already exactly what the Remnant and PA do. They increase cultural suppression and allegiance, as opposed to spreading it.
and more on research
Again, research is only a trait in that something
comes from that research.
He may not have a huge population but that is due to him exterminating rebels in his sector. [...] While he lacks major Imperial ships he makes up for it with a strong economy.
So, strong economy and industrialization from a smaller tax base would mean he's using a lot of trade ports for credit income, the Imperial take on which is already the Pentastar Alignment, or he'd be copying the EotH's primary industry techs and getting credits directly from resource extractors.
While he lacks major Imperial ships [...] The Titan foundry wont be allow for them however they get Zsinj's Iron Fist and Razor's kiss which can be converted into Second death as a bulwark like ability on steroids.
By lacking major Imperial ships, you mean access to a regular buildable titan? So again, militarily, he relies on spamming large amounts of Imperial ships, which sounds pretty much the same as the other Imperial factions. Also, considering the amount of time and resource he put into wanting more super ships, he doesn't seem like the kind of faction that shouldn't get a regular one.
I know Corey Doesn't give a shit about my opinion but I don't care 
It's not that we don't care about people's opinions, it's that ideas are put in based on their merit, and Zsinj doesn't really offer any merit as a playable faction. Honestly, a lot of people asking for the Warlord stuff just comes down to them wanting to see the name "Warlord Zsinj" ingame- that's all it really means. You can already see that on Dathomir where you find Iron Fist, or playing against an Imperial AI faction, Warlord Zsinj is one of the random names for it. The PA and IR already encompass three basic takes on the Empire, and making a fourth is still gonna be within that fairly small and already crowded range, which is why I say he is, at best, a fourth option for a regime in a future version if we can physically fit him into that tree. The more you have to
try to differentiate him, the more it's clear that the thing people find attractive for him as an option is simply the guy itself, not the opportunities he actually offers for gameplay. He's too similar to the Imperials, because he
is Imperial. If you change that enough to make a new faction, his roster and playstyle cease to be Imperial. We can't build a whole faction around a nightcloak.
So far, using what you've suggested and removing the presentation aspects, just boiling it down to playstyle (and flipping the diplomatic thing, because again, making him a great diplomatic faction doesn't really make much sense considering everyone hated him and wanted him dead).
We have:
1. Poor diplomacy (Remnant is already this, under Palpatine is this in spades)
2. Culture is about repression and allegiance increases, not spreading (exactly like the Remnant and PA)
3. Economy very strong, high reliance on building trade ports (again, PA)
4. Ships are quantity vs quality, need to build up a large force before attacking (again, same as Remnant and PA- they're even the same ships)
