My normal threat moves KILL the adds anyway, it is not going to matter.

Holy Shield and consecration need to always be up. If you aren't using them you are taking more damage and the healers may have aggro issues on adds if you just sit there with autoattack on. SoV is ticking away on every mob most likely thanks to the new add eating a HotR. If you aren't judging you are taking 20% more damage from one of the adds, so you judge 2 of them at a time and lower the healing needed.

The moment an add is overcharged you go into full threat mode. That means finding him, hitting him with judgement and then ShoR, and doing the full rotation. Anything less and the insane DPS coming in to kill him will pull aggro. So the entire group just ate a HotR, consecrate and is hitting the HS charges.

I've done it plenty. Nothing you do is going to stop new adds from showing up. Paladin AoE is automatic and so pervasive you can't manage not to kill an add just from how you have to fight. I've tried doing it with no moves except the occasional judgement and holy shield. The adds still died simply from when someone got overcharged and the splash damage murdered one.