Seeing the custom class posted gave me some motivation to draw up a rough draft of my own custom, a fair bit different in design.

Name: Hoplite (Third name I considered, went from Shield Bearer (Thought I could do better), to Phalanx (Which was the formation typically used, so Hoplite worked better in my mind)

Weapons: Lance & Sword

Skills:
Defender - Increased Def and Res when attacked

Formation - Increases adjacent allies Def and Res, more likely Dual Guards

I haven't given thought on solid numbers or anything yet, just some thoughts on overall skills. Been giving advanced classes, promotions, and such thoughts for this as well.