If you take JotW you are just nerfing yourself as a healer. You have to take a lot of filler stuff just to get a minor mana regen buff. IMO JotW is not the problem... simply make deep holy a better choice. Currently deep holy talents suck and until that changes JotW almost looks good.
The problem with JotW is that you lose all other insentive to Judge by specing that deep into Ret. Also, if speced JotW you must be in practically melee range to Judge. There are many obvious reasons why that spec is doomed to fail in PvE.
Blizzard's design philosophy doesn't include buffs. If they want to disinterest people in a spec, in gear, in a rotation, anything, they'll nerf something that hurts other specs.
They did it with daggers, not by making daggers more attractive, but by nerfing sword, mace and axe damage with a normalization in order to make the already sucky daggers "not suck as much."
They did trying to make Holy more attractive for healing paladin, not by buffing holy or actually adding useful talents, but by moving Sheath of Light and by nerfing Judgements of the Wise.
They never address the ROOT problems. They band-aid and nerf things in an attempt to "break" things, which never works, and only screws over people who are unrelated to the problem to begin with.
Right now, 18/0/53 is the superior healing build because it gives paladin a controllable on-demand mana regeneration (that benefits the party/raid), a proc based HoT, more spell power than Holy offers, a proc based instant Flash of Light, just as much spell crit, and better raid buffs (Imp. BoMight, Sanctified Ret., Heart of the Crusader,) a CC with Repentance and more offensive power in general.