Returning RDM75/Nin37 - Solo at 99?

[Mirage]

There is almost no old content that can't be soloed nowadays. The few exceptions there are would be things that summon a bunch of adds that then do some huge AoE move right away and/or can't be slept.

You can probably just melee genbu to death without problems now, for example.

Due to level correction, you will probably have good evasion vs for example sky gods, even as a rdm. Additionally, you will resist their magic a lot more.