Like Blue Star said, being omni you are aligned with the unredeemed. Bottom line is don't kill unredeemed mobs because you will lose Faction and you need that especially at high levels. If you need stuff like insignias from unredeemed mobs wait around while clan are killing them and then ask for insignia.
One thing about going to Adonis, unless you have someone to show you how to get there it is EXTREMELY hard to figure out how to get there (Trust me, I spent two weeks trying then finally got friendly clan high lvl enforcer and doc to help me)--basically you need a team to get there. I think most players that make it to Adonis and higher playfields have help from higher level org mates, which makes me realize the importance of developing high level chars in the SSX-AO. However, if you can get to Adonis and get on a good team and then kill one of the Adonis heck HP behemoths it's not impossible to get upwards of 900,000 XP! It's also an interesting playfield since it's mostly underwater and you have to wear this "diving suit" part of the time that protects you against this huge underwater DOT.