Large Time Sigs!

I have a gripe about the new large time signatures. I wish they were more Finale-esque/adjacent, and I would like an option to make them repeat down the score. The one large time signature just doesn't do it for me. I would also like greater ease with being able to edit expressions throughout sections. Maybe that's already a feature that I haven't figured out, but I would love to edit expressions and things of the like through staves. (also a euphonium soundfont in muse sounds would be nice :) )