I wouldn't go for intellect over strength, but the JC neck has some int and str. A couple other items, some of which are no longer available, that also have both. There's also the ring with int and hit to consider if you need hit. Personally, I think the JC neck is better overall. Agility is melee crit only. It doesn't add dodge or armor anymore for ret. You can always use wizard oil too, as well as int to 2H from chanting over +2 damage if you prefer. Intellect adds SP, spell crit, and SP adds damage. Int makes for more effective exo spam too with increased mana pool, crit and damage, which is useful on another paladin as they bubble, or someone with heavy armor, as well as keeping you out of ganking distance of a large mob. Also handy as someone tries to run. Int is good for self heals, as well as if you chuck the occasional heal for someone else.
Overall, int is nice, but it's not really something ret/prot tend to stack.