I've enjoyed Paladin this raid tier. I think the actual rotation of buttons is fine, and all things considered its rotation fits very clearly in to 3 of the 4 fights I've done so far.

- in 5S I land a DoT right before the boss goes untargetable in Devour, and I enter magic ranged when he corner dashes away
- in 6S I enter my magic phase right as exchange pops up so I'm promised uptime if I spread away
- in 7S my small FoF drift (62 seconds w/ atonement) lets my line up for party buffs in the post purg/during purg pot window

The rotation is fine, it's really just the damage imho.