You do not elaborate on why your situation is dire. You also did not include photos or a history describing your situation. I am a big fan of using rib grafts when structure is missing from trauma or a prior rhinoplasty and there is not enough septal cartilage to use.I find the strong straight pieces of rib to be excellent for rebuilding the bridge of the nose that has collapsed and formed an inverted "V" deformity after a rhinoplasty. We rarely see complications with the use of rib grafting. On a female the scar is nearly invisible as we place it in the same location as plastic surgeons use to place breast implants. The biggest patient complaint is soreness in the chest for several weeks after to cartilage is harvested. The most difficult part of the surgery is deciding how to carve the grafts themselves. One wants them to be large enough to correct the collapsed area without making the nose look too big or wide. I think that there is some resorption over time and I try to make the grafts slightly over large to compensate for this.
I feel strongly about using only natural materials in the nose during rhinoplasties. There is less risk of extrusion and infection with natural grafts over the use of synthetic or non-living tissue grafts. We have a very high success rate with the use rib grafts in revision rhinoplasties. We have never had an infection, extrusion or warping when these grafts are used to correct inverted "V" deformities.
I think the most important thing to consider when undergoing a revision rhinoplasty with rib grafts is the selection of an experience surgeon who can show you typical results with before and after photos.