Nice review. My personal opinion regarding secret agenda is that if the faction likes you, they are unlikely to stab you in the back, but we don't know much yet about how these agenda will work, so I may be wrong.
About the Arena Powersuit, it's really great, but it has the drawback of needing Toughness 70+ to be used. Not everyone can use it ^^
Good point. I don't think that check is actually implemented yet so I forgot about it.