I'm already ticklish everywhere on my body from mildly ticklish to almost too ticklish, so I'd need to really think about it if I was ever given the chance. Overall though, becoming more ticklish at least sounds quite fun.
I think I would. I love to have my feet tickled, but they're not nearly as ticklish as I'd like them to be, while the rest of my body is already healthily ticklish... XD