Don't underestimate the power of nonheroics, just because they have fewer hitpoints and no talents doesn't mean they are weak.
At 8th level you get a nonheroic 6 character, with a bab+4, 6 feats (7 if human). With simply AP (light, medium), WP Rifles and coordinated attack and weapon focus (rifles) you can get an auto +2 to your attacks every round. give them medium powered battle armor and they will instantly stand out from any other nonheroic opponent you will face. Plus if they are gaining xp (don't recall if they do or not) then they can eventually gain heroic levels, further increasing their playability.
IIRC followers are essentially minions in the 4e sense and are incredibly powered down comparatively. Unless you invest heavily in feats and talents meant to boost them.