I’ve already added my support to an earlier request for alternative chord symbols, and some detail on how I would like to be able to use them.
My new request is for the ability to add free-form rehearsal marks.
Jazz lead sheets typically use sequences like Intro, A, A’, B, A’’.
Personally when writing lead sheets for my bands, I prefer numbers A, A2, B, A3, simply because they are easier to say in a rehearsal, particularly here in Japan.
In written-out jazz arrangements for my piano students I usually combine these methods something like this:
Theme: A, A’, B, A’’
Comping: A2, A’2, B2, A’'2
Piano solo: A3, A’3, B3 and so on…