From your POV, what's the most important thing when tweaking your FRFR?

[tweedster]

If gigging is the order, then dial them in at gig volume! Fletcher Munson curve explains this everything else is pretty much straight forward but subjective when it comes to the tone, I/R, amp sim or effects.

Nothing more important than this! Set tones at the volume you will be using!

If....

Sounds great at moderate home volume (90-95 dbA) but an ice pick live (105-110 dbA)
Sounds great live but so dull at moderate home volume.

Then...

Fletcher-Munson in da house.

And after 45 minutes of tone chasing, at gig volume, your ears are shot and need a rest. Unless you are using ear plugs (and you should), then, you wont know how it sounds till you here the playback.