but I don't think the replace panel sees much use in any case
I'm going to have to disagree with you Jon. I frequently use this panel. It's really invaluable when I'm trying to do cryptographic work and need to do lots of case sensitive and specific replacements.
Yes I think it should stay I've used but not very often, I usually just do (?i) in the regex, What I would like is shortcuts to select/unselect the options in the find/replace panel...
for example to toggle regex matching something like alt+r, then toggle search in selection, alt+s, etc... I hate to use the mouse and select them when I'm typing the pattern to find/replace... e-text had this.
Not a biggie but useful/productive