getting a MVP up and out, means that you don't have all of the bells and whistles. So it's a good idea to not do the things on your list, until you have a few people asking for the product. Or you can set up a wishlist, checklist that you have people check off. So they can tell that you are looking for future upgrades. You just would like for their input in the direction to go.
I agree, I won't implement all 15 for the launch. I almost feel into the trap though. I have categorized the improvements into 1st, 2nd, 3rd, 4th and Coming Soon. I have knocked out the "1st" ones already.