I did briefly consider adding a mock fly and waistband but in the end just opted for a regular elastic cased waistband. I really love the fit on these. I deliberately kept the ankles slightly looser to avoid the whole leggings look. I really like that if I wanted to, I could actually wear shorter tops with these as well. I probably wouldn't but the option is always there.
Look! No wobbly bits!
Would I make these again? Yup, with the right fabric, this would definitely be a possibility. I even have a vague idea of making these up as running pants with brightly coloured insets.