Q u o t e:
If CS and HotR are meant to be single/multi-target counterparts, then they should both hit as the same type of damage. Since CS is stuck as physical due to Ret using it, HotR should probably be switched to physical as well. Mana cost of HotR seems lower than it should be, compared to CS.

We want Prot paladins to be able to swap between Shield of the Righteous and Inquisition when going from single-target to AE tanking. One of the mechanics that lets that work is Hammer of the Righteous being improved by Holy damage.

Crusader Strike should win handily against single targets. If it's not doing that yet it's just a numbers adjustment, so you'd be better off testing as if it were the case rather than trying to build a rotation based around something that you know we're likely to change.