Ok, thanks for explaining how it works.

@G.A. It should help, specifically L/XL add more too the "strength" points when determining invasions

Thanks for the reply. Do you think I could help it a little by allowing, favoring the construction of a ship for a given faction in my shipyards?

@G.A. The Trinity/Xenon issue can probably be resolved with my Shuffle Jobs mod, that will add the strength of the base game jobs alongside the DLC jobs and you should see fleets deploying between all regions of space, as for the Split, they probably cant muster enough fleets to "invade", even if a sector is empty it runs an invasion script looking for a specific amount of "strength", the script can time out if ships take too long or it can't find enough ships to meet it's strength criteria, I would recommend adding a mod that adds to the overall fleet strength of the Split, (Increasing fleet strength of AI Empires is on my To Do List for a release). But my diagnosis is overall limited fleet strength, the script and AI at least works most of the time til they hit a certain threshold and get "overextended" with not enough fleets to cover all their bases.

Would you be able to fix the buggy Vanilla Ai for the TRI faction?
After uniting Paranid into "TRI" faction, enemies can be chosen. Unfortunately, the TRI faction, even when it fights against old and new enemies, does not take over newly plundered and abandoned sectors on its borders.

A similar problem arises with the Split faction, and this happens very often when Xenon spills over their tribal sectors and occupies most of their sectors. Even after being completely freed from Xenon, Split will not restore all of its original sectors. (RHA - CUB and FRF works correctly, but the "Zyarth Patriarchy" Ai for recovery is almost always broken. Regardless of their variant endings.)
Both sectors of Emperors Pride also remain unoccupied after defeating Xenon.

Thanks!