Glissando collides with accidentals

Find attached different use cases of glissando.

1. Glissando collides with sharp and flats.
2. There is no way to put two glissando lines between two chords. It's common notation for cello.
3. If the glissando text have letter like g, p etc... the letter collides with the wavy line
4. Glissando lines should be editable with double click + handle like any other lines.