Shivans are fairly easy to get without dealing with Griefers. Bloody Bay's so low level that anyone with a decent travel power can run halfway across the zone and avoid conflict.

Siren's Call, I've heard, is utterly dominated by the redside. Warburg is good if you're in a group... and Recluse's Victory has one of the most obscene requirements to get the temp power ever, so I've not seen many Longbow Mechs around, but they're just Vanguard HVAS in red and white(metaphorically), so it's not a big deal.