I've been thinking about this a lot recently, FE12 is EP based, but one bow user to train up is recommended because the Partia is pretty good. Castor/Warren aren't bad since they have good availability and meh growths, I'd say Ryan is overrated because he has 4 base speed and a 50% growth, Gordin is a weaker Ryan, and most of the pre-promotes are meh. I've heard Draug as a horseman is pretty good, and I can tell Luke as a horseman is pretty good. Are there any others that I missed?