I agree, I think Formless has become to powerful for a utility ability. It went from an ability good against select mobs like Flans or Slimes into an ability which dominates an entire piece of content due to the developers creating special aspects to the mobs most of which revolves around magic damage itself.
Really the job is an issue, if I do any event, not just Delve, any event where I need both Physical and Magical DMG, MNK is the job I will take every time because it can do both of them very effectively. The only time you take a BLM is when a MNK simply can not do the job for certain reasons, such as Adamantoise, which to my understanding creates issues through high DEF, not PDT, which is why BLMs work and MNKs do not, or the case of Azure light in Abyssea, where magic DMG from a spell has to be the killing blow. But in the case of Delve, or any other event in history where magic DMG was preferred for a reason, such as flans or slimes and such, a MNK is better than BLM because MNK can get such a low delay and high DPS while still performing excellently throughout the remainder of the event.
I would assume not since all of the same damage calculations for MNK still take place the same under Formless Strikes, the only difference is that the DMG is converted to magic DMG, and I think it is given a reduction to damage as a penalty for that reason. Anything like Magic Attack or Defense, Damage, or anything else Magic related shouldn't really effect its DMG.
This is really the main thing about it all, MNK already wins in so many fields that this is just adding on to whats already a somewhat overpowered job. MNK is the best DD from the normal selection easily because it has such great abilities and has the most HP, on top if that the fact it has the best DPS too and then Formless comes along and puts it as one of the best sources for magic damage.
This entire thing about SD/DB is offtopic, but to humor it, DB wins on low DEF/crit buff, SD wins on high DEF, with Ryuno DB wins in almost all cases to my knowledge unless your attack is just that horrible due to penalty.
Again its not about the job being broken because of Delve, its the fact that it can perform magic damage so well and that magic damage itself is now becoming a required gimmick for events rather than a simple advantage against certain mobs.Yes, MNK is being used more... but then every other DD has kinda always out shone WAR... just by the nature of all their swanky JAs. (SAM self skillchain crazy, DRG jumping, DRK having basically the same JAs but more potent while being suicidal, etc)
And as to Delve.... I don't think MNK being used in Delve implies MNK is broken.
The best? No, not far off though since it can stack so much attack speed so easily and with buffs, not incurring a forced 2 second delay between all spells and forcing it to attack slower than it should have to, also, it has more attack buffs, and it has the ability to do Physical damage to everything, making it much more powerful overall than a BLM. BLM does more Magic Damage, but it falls short everywhere else, which is where the issue comes in, when you do not need a real magic damage dealer to do magic damage because a melee can really do the job better in the end.