Is that supposed to say CGR?
Cosmic coast rider
Fortunate Son
Herc will save you some revives and mostly a defender for bgs to steal some time. Cgr is basically everything else. I actually was using my r4 cgr more then r5 ascended herc, now cgr is also maxed. In quests cgr just destroys things super fast, so you don't really have time to die, but also saves a lot of your time doing boring mcoc things. I'd recommend to rank up cgr first, if you have at least some below average skills