Sensitivity of the breasts after surgery will vary from patient to patient. Five weeks is a long time to continue to be uncomfortable, but it does occur. As long as the results of your surgery look good, be patient with the healing process.
Liposuction techniques have improved from those you experienced 20 years ago. Rippling as a consequence of liposuction, however, may not be totally avoidable and is more likely with very aggressive treatment. The results of thigh lifts are often less impressive than your expectations.
Your open wounds will ultimately completely heal, but the resulting scars will probably not be as good as you desire. They can be revised, but revision should wait until full scar maturation, approximately nine to twelve months from the time of complete healing.
Obtain another consultation with a plastic surgeon about your options for additional treatment. It would be impossible to comment on what would be appropriate for you without an examination.
I would consult with a plastic surgeon to devise the most effective treatment for your condition. Treatment can range from skin care products to peels, to laser therapy to surgery.