Having a retarded amount of cooldowns to pop isn't good gameplay design, and so far there is nothing to make you feel like an actual Paladin.

I think that they should add some sort of rotation choice that uses mana, and forces us to generate it back, but doing so having choices to make. Use mana of defenses, heals, buffs, or just aggro.

TP funds core abilities, core abilities fund mana, and you have to make actual CHOICES in where you use your resources.