The mercenary (base class)

[Godskook]

Contract Focus: While under a contract, the mercenary gains immunity to mind affects and gains a bonus to all saves equal to 1/2 his mercenary level.

This is a *MASSIVE* bonus at most levels. At 20, that's +10 to saves. Compare Paladin's Divine Grace, which gives Cha to saves on a melee class. For the Elite Array on a Paladin, this will range from +0....+2 until the Paladin invests in +Charisma gear bumping it up to ~maybe~ a +5. Admittedly, with strong stats, these start to break even, but you should be careful about adding flat values where another class gets only +modifier.