I would love to see a tank job coming off of lancer. I think it should be parry based as lancer already has access to the very strong keen flurry (increases parry rate to 80%).

Something like this:

Templar

lvl 30: Elusiveness
Increases parry rate by 20%, lowers damage dealt by 30% and increases enmity produced. Using certain actions reduces the CD of Keen Flurry by 5 seconds.

*certain actions would be mainly combo enders like Chaos thrust or Full thrust.

lvl 35: Impulse Pierce
Potency: 150
Waives positional requirements for 5 seconds. Can only be used after parrying an attack.
Bonus: Increased enmity

Lvl 40: Shield Rush
Potency: 150
Increases damage mitigated by parries by 10% for 10 seconds. Can only be used after parrying an attack.

Lvl 45: Blind Thrust
Potency: 100
Combo Action: Vorpal Thrust
Combo Potency: 270
Combo Bonus: Greatly reduces enemy accuracy

Lvl 50: Tenacity
Loss of HP causes increase in parry rate and damage mitigated by parries for 20 seconds
CD: 3 min

Just some quick ideas. Would overall be very proc based in playstyle to differentiate it between PLD and WAR. Not sure how it would deal with stuff that cant be parried though, like magical attacks.