Yes, a tummy tuck will help with your rippling. Liposuction just removes fat from below the skin surface, and relies on the elastic properties of skin to shrink back to a smooth contour. All surgeons try to remove fat in an even fashion to avoid irregularities, but it is hard to be perfectly even. In younger patients with good skin (very elastic skin), soft irregularities will be hidden as the stretchy skin will smooth out the contour. (If you have some cellulite or contour issues, you can emulate this by putting on some tight spandex - everything evens out.) The problem is that as we age, our skin looses it's elastic properties. For this reason, some patients are not good candidates for liposuction, as they will likely show irregularities, and some patients who had good liposuction results when they were younger may start to show irregularities 10 or 15 years later.
A tummy tuck removes a segment of skin from your lower abdomen. Some patients have had this region addressed by liposuction to camouflage the bulge caused by muscle weakness from childbearing, and can have contour irregularities in this area. In these cases, a tummy tuck is the perfect solution to their contour issues (as it was the right solution to begin with) - see the morph in my video.
In your case, you have irregularities in the upper abdomen. A tummy tuck will help by resetting the skin tone across your abdomen. (Using the spandex example - if the spandex is old and somewhat weakly elastic, if you stretch it out, it will become tighter.) So I agree that a tummy tuck will help. It would have been preferable to perform the tummy tuck before the liposuction, as the scar tissue under the skin from the liposuction is not as elastic as regular skin, so it limits how much skin can be removed with the tummy tuck.