well i'd agree with your point of view with theoloras spec you can either heal or tank or dps which is true.
anyway we have many options right

that is perfect for us paladins.
About my Theory for maintanking i will point some things only which i don't expect many to agree with :
When i go to raids with all consumes (we still need buff limit for surviving) so i rather not use many but still use 1-2 intellect consumes depend on the fight and situation .
Without Divine Intellect in my personal "consumes way" (can mention them if you ask) i usual have 3k Mana which is kinda too low.
With Divine Intellect in my personal way explained i go up to 4.5k-5k mana.
This Mana Pool allows me to "manipulate" , "control" on many stuffs including spamming "holy shield" always.
It all depend but :
Why i always choose this over improved sor ?
I already use Spell Damage Weapon + Spell Damage enchant on weapon + Brilliant Wizard Oil + Greater Arcane Elixir which clearly increases my threats enormous high from Seal of Righteousness without using that Talent tree .
So my mana usual is wasted on important abilities as Holy Shield and sometime (depend on situation without spamming too much) but always Max Rank consecration.
I don't really waste mana on targets using the spell damage when tanking boss for example while i hit with melee swings (sor) to build aggro .
what i do is : pre pull - Seal of righteous - holy shield - run to boss with - judgement of righteous - reseal sor - 1-2 sor swings - seal of crusade - judge of crusade - seal of righteous - reseal sor once each 30 seconds - chat on facebook or drink coffee until the end of fight when everyone use their max dps on boss .
holy shield during fight i use only if boss hit hard . nothing else matter , just pop stoneshield potion and enjoy drinking your coffee.
(using 80-110 on current patch) spell damage only by weapon solve all aggro issues and makes you aggro machine on 1 target without consecration and without improved seal of righteous . at a same time we don't risk surviving so everything else i go for tank gear.
in few words theory is simple but kinda reading it is complicated to understand by many people.
i can show you in ppm videos my tanking ways and stuffs so you can see what i do if you wish

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