I often have situations when I need to add or correct lyrics and the current sync editor is just to slow for that imo.
Could somehow a lyrics to notes function be added?
Cakewalk Pro Audio 9 had such a function I think, which was perfect and I haven't seen it since in any other software.
Basically, you would paste the lyrics in the edit window and the software first hyphenates the text and then automatically attaches each syllable to a note (the hyphenation rules could maybe be taken from the OS X dictionary and one could choose which language the lyrics are in). You could maybe then also choose which midi channel you have the melody on.