Rework candidates:
DRK: it's clearly too hard to balance in its current state, the ew additions were enhanced unmend, more ogcds to spam, oblation and potency on living shadow which should be deleted at the earliest convenience.
SMN: it can't go anywhere, is less of a summoner than before and is miserable to play which has really inconvenienced me for msq fights.
SGE: make it deviate significantly from the scholar template. it's silly to have two nigh-identical jobs, look how much people complain about war/drk and they're more different than this pair. Then again tanks have a louder/larger playerbase.
MCH: ew gave it drill 3. As with DRK, the "Shadowbringers good platform for further development" has lead nowhere.
BRD: make a good support job. remove everything that made it good. wonder why noone plays it.
PLD: hopefully the 6.3 rework wasn't the final version and it's just a 5.4 monk style thing.
MNK: just keep reworking it, it's bound to get into the most played job shortlist sooner or later
Healers in general: do I really need to elaborate? Would be surprised if this one came though, SE don't come across as particularly interested in the role.
SAM: it's difficult to see where this can be taken - is this not the justification SE gave for DRG/SMN?
Viper/thingywhatsit: hedging bets here, but something's bound to be funky about them. If summoner's unchanged, maybe the caster won't have the mobility to let people faceroll their keyboard and still perform optimally.
RDM: a definite maybe. something minor to allow more flexibility in the burst or a more in-depth overhaul. There will come a day when they can't just stick another finisher on its burst.
AST: again after the 7.0 rework flops due to entirely predictable complaints.

SCH is the healer in the best state at the minute. While a low bar, I would like to believe they'd prioritise the ones more in need of adjustment or do role-wide changes where necessary.