I run one of each....after getting destroyed in pvp, I can appreciate the knowledge gained from how others use subclasses I have access to. Doesn't mean I can be as proficient, but how else can you learn about your potential enemy? As for time & bounties, if I can't run a guardian, I still visit the bounty guy & delete ones I don't feel like finishing...when I have full bounties & I can finish most on a single patrol (sort of) I get them done