2. There are numerous ways of strengthening the muscles to support the arch.
This includes using taping techniques, using orthotics, by controlling the turnout control and things from the hips. There is a huge amount of information that we have put up on the blog to help with this so I would definitely look at exhausting all of those options before actually looking at undergoing that surgery.
3. I think yes, it would make it very difficult to dance proficiently if you have your entire plantar fascia removed.
The Plant Fascia's other name is the "Spring Ligament." It’s designed to let the foot deform and then recoil a little to help get some spring in your foot so removing this will make jumping and landing from jumps become very difficult.