All casters except for Ele got stuff like extra Crit, Sp or Hit from Spirit at a worse conversion rate in WotLK.
The 1:1 conversion to Hit was added in Cata, not MoP.
I liked the WotLK/Cata/early MoP loot system the best, which is basically what we have now in SL and DF with minor adjustments. Well itemized gear without any random procs, but the amount of loot being low enough that you won't have full BiS after 2 resets.
MoP with fixed 6+ iLvl Warforging was ok, but still worse, likewise for WoD with the same forging and random socket procs.
Legion/BFA Titanforging was the worst form of cancer, and should never have left the board of ideas in the first place.