Let me preface this by first saying that my paladin, a pure level 20 paladin, had been my most worked-on, favorite, primary character until the enhancement pass. He has more TRs, more epic gear, more raid completions, and more crafted equipment (greensteel) than any of my other characters, and probably more than any other two combined. My first character on DDO was a paladin, back when the game launched (on a friend's account), and my first character on my own account, started in 2008, was a paladin. My first 32 pt character was a paladin, who became the multi-TRed, geared-out character I introduced.
And I can't bear to play him after the enhancement pass.
Why? Because he lost HP, DPS, AC, PRR, and threat, overall. Because most of my other characters gained new tools, new abilities, that made them more interesting, if not necessarily more powerful, and forced me to make some real decisions, while this character has gained virtually nothing of significance. While all the other classes seem to have received new options, paladins had most of their existing options broken up into their individual parts and then resold at higher costs. So, this analysis is fueled by the labor of love I have made for my paladin in DDO, and the disappointment I've felt about how paladins have been treated in the enhancement pass.
Abilities will be ranked:
A - worth the AP investment to reach and purchase
B - a strong ability,but not necessarily worth the AP to reach and purchase/something that could be an A with a little improvement
C - not a very strong investment, but somewhere to spend AP for "spent in tree" prerequisites, or to fuel some better ability
D - not worth the AP investment
F - should be deleted from the game