Rampart just generated a flat amount of enmity for every person it affected (it was AOE). Sentinel had an enmity generation bonus and it was like 90s cooldown. 1.23 Rampart would be closer to AOE foresight + magic foresight. Outmaneuver was kinda okay but TP generation was way different and Outmaneuver didn't really increase your block rate enough to be effective on its own. Had to pair it with the revamped Divine Veil.

Anyway I think it's a pretty common sentiment that 1.23 paladin to 2.0 paladin was a big downgrade as far as cool skills goes. We've gotten a lot of stuff back in some form since 3.0, but some stuff is still half dead. I think 1.23 spirits within was way cooler than the one we have, for example. The two are very similar, but 1.23 SW required a combo that started with a block reaction attack (Phalanx), had a 1 minute cooldown and SUPER hard. It was a really big part of your damage and enmity so you kinda wanted to hit it with high HP.