I'm not sure what letter would be best to use, but I often find myself using the following workflow that would benefit from this:
1. Ggrep "something"
I want this too. But I'm not sure what to map it to. The most obvious choice is ]<C-C> (which would allow :lnfile to be ]<C-L>). But it intuitively makes sense for <C-C> to cancel the previous ].
I've used this plugin (and ] jumps in general) very little so far so I'm not sure what would be most logical.
I was going to suggest ]Q but that's already used sensibly it seems. What about ]<C-q>?
Total brain fart, ]<-Q> would be the analogous place. The only problem with that is that it won't work in a terminal unless you disable flow control (stty -ixon).
I don't think that's a problem because <C-q> disables flow control.
Pressing <C-s> gives me a problem in vim (freezes the terminal), but <C-q> doesn't do anything but fix my terminal (if I previously pressed <C-s> by mistake).
Add maps for :[lc][np]file
It's a problem in that it's confusing why something that works in the GUI doesn't work in the terminal for not at all obvious reasons. Still, it's better than nothing.