This may be a long shot, but it causes me a lot of grief: in situations where a flat slur ends on the first note of a system (or begins on the last), the tiny flat slur there is very ugly, and it is difficult to make it look consistent with analogous curved slurs. I would love to be able to designate this part of the slur to be drawn as a curved slur, while retaining the rest as a flat slur.
Alternatively, an Engraving Option to always draw short portions of flat slurs as curved would be very welcome.