Agreed;
I would like to see them pick a particular job as a "Gold Standard" for complexity, ideally for each role, so we can know what they expect to be average difficulty/complexity. Whatever that sweet spot is.
I would also like to see what they think the basic rotation should be.
My DPS main is Samurai...
... and I'm not really sure what the issue is with Kaiten either. Is the purpose to encourage using other Kenki actions? If so, I've never really had a problem maintaining Kenki for them. While I want to main as DRG, SAM is just easier to play so I play it.
Samurai's Kenki gauge is just not a difficult thing to juggle compared to time-limited resources like... say, keeping Eye of the Dragon up or shuffling stances on Monk. Even the Enochian "clock". Those are not bad mechanics, it's just night and day compared to a resource you can build up and pop whenever.
As for WHM, it's more of a healer issue at large..but there's so much bloat, and really weird gimmicks that don't build on previous ones.
Just IMO, they really should just cut it down to:
CORE HEALING>
1 Single Target Cure, with added effect ("Cure", but also gives Regen. No Free Cure)
1 Single Target Expensive Cure ("Cure 2", but more like PLD's Clemency)
1 Single Target, Instant Free Cure Bomb (Benediction)
1 AoE Heal, with added effect ("Medica 2")
1 AoE Expensive Heal ("Medica")
1 AoE, Instant Free Cure Bomb (Asylum)
(I would swap Medica and Medica 2's names to keep it in line with cheap+gimmick and expensive cure bomb)
GIMMICK HEALING (uses Lilies, and have Lilies generate via DPS; more DPS = more free heals to weave)
1 instant cure bomb
1 instant AoE bomb
DPS (Use DPS to generate Blood Lilies)
1 DoT (Aero)
1 Regular DPS (Stone/Glare)
1 AoE DPS (Stone...2?)
1 Heavy AoE (Holy)
--
Rather than giving Tetragrammaton AND Divine Benison AND so on, I would say just have more charges of the above related skill. Like, WHM is not supposed to be a shield-healer, so why even have Divine Benison and not a "field of regen".
A lot of WHM's extra abilities seem to revolve around conserving MP (eg Thin Air, or Free Cure). If that is their gimmick, then make THAT the gimmick. Make maintaining MP an actual thing. If not, cut all that crap and make a new healer that revolves around that.