All those taps will add to the dialog, for sure.There are some really cool 'Delay' algorithms in the Reverb block on new (beta) Axe-Fx III firmware. If/when those make it to the FM9, they might be really useful. And the fact that the FM9 can run a second Reverb without any real CPU% cost makes that even more useful.
And don't forget about the other Delay blocks that are currently available. Plex Delay, Multitap Delay, Megatap Delay, Ten-Tap Delay, etc...
The pitch block can also be used as a delay.
I knew I could do something with reverb, but I didn't know pitch block could be used like that. I'll have to check that out.As can the reverb via pre-delay…
When recording it is usually considered best practice to add delays to dry recorded tracks in post to avoid issues.
Yeah normally printing with effects can sometimes paint you into a corner. However, as long as you always capture a DI of your performance, you can always reamp the track later with different effects settings. It's a little more work than adding post effects in the DAW, but at least you're not stuck with one recording.