Optimally a dps does damage and lines up raid buffs with big cds.
Optimally a tank uses cooldowns to make damage smaller, positions the boss swaps with the cotank and/or facilitates ignoring mechanics with invulns.
Optimally a healer heals as little as possible while ensuring avoidable deaths don’t occur.

This being said, I’m not sure I necessarily like the idea of a tank-style rotation. Losing gcd heals cuts away at the “ideal” to try and attain in exchange for more downtime engagement. I also don’t know if it would be more sensible modelling these new downtime rotations on casters rather than tanks, if only because casters don’t have 123 combos. At the same time there is so much downtime that I agree something should be done to make it less dull.

I’d also model scholar on warrior rather than white mage because scholar has ties to marauder in the job quest stuff and the tank rotations are all a bit homogeneous. Something like a dot generation phase > dot detonation/extension burst, ruin 4 stacks as a proc from dot ticks. White mage if not modelled on 50blm could take after dark knight I guess - preserving the faster paced presence of mind and dull dull dull rest of the time. AST and pld could be a couple too, the atonements replaced with cards either on the gcd or tuned to not be overwhelmingly broken with that many so frequently. Happily this leaves the two I dislike most, both with the nebulous “dps” identity to pair up. I think a more flexible burst to take advantage of kardia and a guaranteed crit on sable sawn or whatever to guarantee critical healing there could be interesting. If I remember I’ll flesh this out a bit and if I don’t it’ll be an incomplete train of thought.