Just a little review of things as I sort out what's likely to be useful. So, checking options for the value of the Thaumas set for mnk to see whether it's worth my time to try to get the gear.
Target 1: Dynamis DC mobs
Subjob: Dnc
Food: Bison Steak
Buffs: Haste Samba from sub; no Haste
Mob debuffs: 5% def down from Box Step
Weapons:
Vere 90 [Smite]
Oxyuranis (fire) [Shijin]
Standard AF3+3 gear set as baseline
Shijin
Thaumas head: bad
Thaumas body: bit of an upgrade over Loki's; Athos beats Thaumas; Toci's is well ahead of Athos. Loki's beats Euxine +3.
Thaumas hands: tied with Athos
Thaumas legs: bad
Thaumas feet: excellent; Euxine +2 beats Athos.
Smite
Thaumas head: bit of an upgrade over Aias; Aias ties/beats Euxine +3
Thaumas body: Tantra +2 body ties/beats Thaumas with Impetus down
Thaumas hands: bad
Thaumas legs: good; clear win over Usukane, slight win over Hachiryu; Euxine +2 or better win over Usukane.
Thaumas feet: about tied with Kacura +1, a bit ahead of Tantra+2 and Melee+2.
So for weaponskills, legs are good for Smite and feet are good for Shijin (carries down all the way to Euxine +2 for those slots; anything floor 60 or better will generally be an upgrade). The rest are pretty meh compared to available options.
TP sets
Oxyruanis
Thaumas head: bad; falls behind Tantra+2 even when haste is far past capped (ie: using Euxine/Thamas body)
Thaumas body: Exceptional. Even beats Tantra +2 with Impetus up. Euxine +3 ties with Impetus up. Euxine +2 ties with Impetus down. Assume head is changed.
Thaumas hands: Strictly weaker than Tantra +2 hands for TP.
Thaumas legs: Notably worse than Tantra +2.
Thaumas feet: tied with Tantra+2, or slightly ahead in some configs
Verethragna 90
Thaumas head: bad
Thaumas body: Beats Tantra +2 with Impetus up. Tantra +2 beats Euxine +3 with Impetus up. Euxine +2 ties with Impetus down.
Thaumas hands: Strictly weaker than Tantra +2 hands for TP.
Thaumas legs: Notably worse than Tantra +2.
Thaumas feet: Slight upgrade over Tantra+2.
Best TP set appears to be:
Weapon//Hagneia(Vere)|Thew(Oxy)
Ganesha/Rancor/Brutal/Aesir
Thaumas/Melee+2/Rajas/Epona
Atheling/Black/Tantra+2/Thaumas
Target 2: Pil
Subjob: War
Food: RCB
Buffs: Haste/Chaos/Miser's/Stalwart's/Berserk
Mob debuffs: Ageha or Dia III (ie: either sam or rdm present)
Verethragna 90/Oxyuranis:
For each gear option, going back to Tantra+2 is an improvement if Impetus is up. If Impetus down, Euxine+2 ties on the body, but other slots still want Tantra since (with the above buffs/debuffs) more attack has little value, while fStr is significantly more important.
With attack buffs/debuffs down, the Thaumas items would tend to return to their higher value as seen above.
The relative values on weaponskills remain roughly the same.
Overall, seems worth getting body/legs/feet, even at +2 or +3 levels. The lack of value of head and hands for mnk (aside from head for Cataclysm) isn't surprising, of course, though I want the hat for thf&dnc.