Is a Giampapa suture a good idea?

That technique can be very effective in the right situation.  I have seen many of these suspension sutures hold their tension for a decade or more.  When properly used it can be a very valuable tool.  Good luck.

This suture is a suspension suture from behind one ear to the other in order to support the healing of the central platysma in its proper position. I don't think it works well by itself but can be helpful to support suturing of the medial borders of the platsyma muscles.

Without good clinical evaluation it is impossible to say whether you need such a procedure. Generally within plastic surgeons experienced in face/neck surgery this is very rarely used procedure? However, some surgeons may have particular reason and skill to use this technique to patient benefit? Good luck.