I've never delved that far into Reaver but I do have a few suggestions. Swap out Shield of the Hero for Shield of the Chosen hit is easy enough to find on gear that SoC was more useful. Also as good as Light's Hammer looks I've rarely found appropriate moments to use it. Same thing with Disarming Blow I've never really found a good place for it in my rotation. Also passing up Aggressive Guardian is crazy, a flat 20% threat increase? You can never be generating too much threat. I'd highly suggest putting some more points into paladin, specifically to get Impassable Guard, I didn't think it looked as attractive for a 44 point talent but if you max out Balance of Power, and Tip the Balance along with Karmic Resolution you'll generate threat when you block (by doing damage to them) and by healing yourself, add the 20% from Aggressive Guardian and you've got a good hold on threat. That will also give you Light's Decree which is great for pulling trash packs.
But that's just me, if you find this working for you then go for it. That's the great thing about Rift!