Is /click even useful anymore?

[Tasty]

Moving beyond the 255 character limit IS the whole point of /click

...and organization. I use /click so I can add / remove spells on the fly (like chain lightning and seed of corruption) instead of having to edit a macro.

Have you ever noticed any delay when using /click macros instead of /cast target=w/e] Spellname macros?

[Fursphere]

Have you ever noticed any delay when using /click macros instead of /cast target=w/e] Spellname macros?

no, but I don't use the normal targeting methods...

my main /click looks like this:

/assist focus
/click
/click
/click

then my dps looks like

/castsequence spell,,,,,,,,,,,
/castsequence spell,,,,,,,,,,,,,
etc....

So the macros totally work solo and boxed.