A new skill! 20 sec job change! Idea.

[Sapphic]

Changing wise, it could just be Weapon since most classes share gear anyway.

MNK, NIN, and DRG all have seperate gear. So you would need to gear up twice. Brd would swap with what? Only shares right side accs with NIN. Also you would need to gear up twice. GJ doing that with weekly lockouts and everyone needing for all the drops...

Greased Lightning, major buff for MNK and losing it to switch to another job that isn't as effective? Pointless. SCH >WHM? there are so many ways that would trivialize so much, 2xbenedictions plus potential 12 aetherflows to use? Double sacred soil +fey covenant+ rotation of fey illumination+double medica 2 would trivialize anything.

Not to mention Hallowed ground and Holmgang and coverphase 4 turn 13, PLD covers and covers WAR, 2nd ankh morn, switch jobs WAR now PLD covers other and hallows. 3rd ankh WAR holgangs, PLD got all CDs up. 4th ank other tank holmgangss. You are guaranteed at least 1 immortal tank for Ankh Morn thus trivializing it to pointless.

[Kyuuen]

No thanks. As others have already said this would become a balancing nightmare.

As for personal reason. I play Nin because I like Nin, not because I want to play Nin and some other class that's being forced on me.

[Riepah]

I'm all for switching during dungeons, as long as it's done out of fight. Switching during combat is silly and I don't even want to try to imagine how much work it would be to fit content around it.

[Sapphic]

I'm all for switching during dungeons, as long as it's done out of fight. Switching during combat is silly and I don't even want to try to imagine how much work it would be to fit content around it.

Only way I would agree with that is if tank or healer DCs and one of the DPS is able to switch as a few times tank has DCd (or rage quit) and ive dropped out, switched to tank and requed in progress. Otherwise it will be like 1.0 again, BLM for the trash, MNK for the boss. If you don't have both geared or don't want to switch /votekick.

so yeah... but no ^_^

[kyuven]

your not given the class to use freely. Only outside of combat can you be another class for 2 mins or so *what ever time here since people think it's written in stone*

This would still trivialize roles. The only classes it actually works for are tanks, healers, and DPS casters, as they share gear. And in those cases, you have this insanity:
For tanks: You get access to holmgang AND Tempered will AND hallowed ground.
For healers: Benediction, Lustrate, Succor, the pet, regen...all in one package.
For casters: Do you have any idea how broken it would be to start as BLM, burn all your MP, switch to SMN, aetherflow back a significant amount of MP, Life drain 3x, throw out all the DoTs, summon Garuda to contagion, and switch back to blasting? You're effectively giving a spike DPS class DoT DPS. Oh, and why level summoner if you can do this?

This is an absolute nightmare to implement and balance. Anyone who suggested this to the actual dev team would not be invited out to drinks that night (the Japan equivalent of being laughed out of the room)