AbdulAlhazred
Legend
I think the reason they made 4e paladins Chr based was inspiration from 3.5. 3.5 paladins tended to have an -extremely- high Chr -- as Chr added directly to their saves, added to-hit on smites, determined Lay on Hands, and determined Turning -- making it a more important stat than their other main stats (Str, Wisdom, and, of course, Con). So it made sense to recast them as Chr-based (just not in combination with also having them be Str based)
But it would have been fine if paladins had simply been STR primary and cha secondary, with WIS as the second leg of the A. Now you have a rather nice weapon based close/melee divine warrior. Yes, the whole CHA thing is a holdover, but really from AD&D where you were simply required to have a CHA 17 (though it didn't actually do anything for you aside from reaction bonuses and such). I'm OK with the idea of encouraging paladins to have a good CHA, but making it the primary attack stat wasn't really needed. I mean you can dump STR, lol. It just isn't evocative of a holy warrior. The CHA paladin could almost have been relabeled cleric and you'd barely know the difference conceptually. The STR paladin was pretty much right on with the concept, but it was just so badly implemented it was virtually unplayable until DP.
Anyway, the point being divine power source is a mess. There are now 6 clerics, 4 paladins, avengers (yet another divine warrior!), the invoker in its various configurations, and the poor runepriest crying in his corner. Essentials clerics were actually a good idea in a way, they at least narrowed the concept down, though I'd have deemphasized weapon use instead of trivializing holy symbols and brought in elements of the invoker. The Cavalier covers the holy warrior perfectly well. Still, they at least made some non-problematic divine classes that leverage some of the existing power inventory.