Not missing anything there. The cast times on Blizz/Fire II are meant to imply you only use them for element-swapping. BLM AoE while leveling has been far stranger in the past (as many other jobs before ShB, specifically tanks). There is decidedly an awkward gap between learning Freeze and learning Flare where Freeze spam is DPS positive for a "normal" rotation, but it's kind of endearing to me.
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Observations after a week
- For better or worse, there has been a noticeable uptick of black mage in content in general.
- Synced black mage is not very appealing (as usual?), with most significant instant spells for weaving gained around EW/DT levels. Foul is a hard cast until Xenoglossy is unlocked at Lv80, Paradox is Lv90 (including F3P because nobody castin' regular ol' Fire after getting Fire IV), and Despair isn't instant until Lv100. Triplecast exists at Lv66+ but can only be weaved without clipping by using Thunder spells or when element-swapping.
- Black mage at cap just feels like it has way too many instants for movement (and hardly any spread out at lower levels). It feels strange letting Triplecast charges cap off since there's no net benefit to spending them on anything but movement or weaves (RDM Acceleration is both mobility and a DPS increase).
- AoE rotation feels meh, but it was kind of always this way since 7.0, it's just more obvious now that Flare casts are fast to show how small the rotation is overall (and the aforementioned High Fire/Blizzard nonsense).
- The removal of timers specifically for F3P and Thundercloud is a net positive, in my opinion. I didn't like the punishment of losing those procs due to a longer fire phase or something (like it's some kind of crime to spend Xenos to move). The problem was losing so much else along with them.
- I still don't really like Thunderhead in general. I get why they made it proc-only (because they wanted to remove the MP cost messing with the fire/ice spend/restore casts while not letting the spell be spammable), but it feels so weird to gate it. I miss thunder spells having big numbers.