Ability to create custom ending for crescendo and decrescendo markings. ie. I use a use a decrescendo down to a niente expression very often and having those be separate causes a lot of editing or a crescendo marking up to a forte at the end of a measure. Be able to create a custom crescendo or decrescendo marking would greatly cut down on editing for these items. This would be similar to how you can create custom lines in finale currently, just adding the ability to do the same with crescendo and decrescendo markings.
I use both Finale and Sibelius in my work professionally, and I always use finale whenever I can. Just thought I would share these suggestions of things that would make Finale even more powerful.
And also, the ability to avoid the bad answer of MakeMusic to get better the product with a lot of things, requested for professionals for years and years.