Increasing Lobe Thickness? Is there a way to have their thickness increased permanently? Injecting liposuction fat, etc.?

What a great question and interesting problem. By taking the tension and or weight off the ear lobes with the repair they should stop stretching. If you have a lot of excess lobule this can be used as filler instesd of discarding it if the lobe os being made smaller. Fat injection also sounds like a great option. It certainly cant hurt although the area is so small that it is hard to keep the fat in the lobule when it is injected.The other injectibles like juvederm should also work.

If the earlobes have stretched out and thinned, repairing the stretched out piercings will help improve their thickness and lend support to the piercings.  This is a very common procedure.  Please consult with a board certified specialist who can assist you in achieving the results you seek.