Me: Of course I did!
I used Stretch & Sew 313, which is barely even vintage, in my opinion, since I was 14 in 1993, but I digress.
Which means that I remember stirrup pants and I still hate them, so I made my leggings/tights stirrup-free but pretty long.
I found a fabric at JoAnn's that is pretty heavy, has amazing recovery and was marked "workout to weekend." The pattern uses a cut-on elastic waistband, where you stitch the elastic to the inside of the tights, then turn it down and topstitch it in place.
I used a tip that I read in one of the Stretch & Sew books for this - instead of pinning the elastic in place before you topstitch, just baste it down at the center and back seams (and side seams, if your garment has them). Then, you don't have to try to pull pins out as you're stretching your elastic to fit.
Ann Person was on record as hating the look of zig-zag stitches on the outside of the garment, but I see this A LOT in activewear, so when my coverstitch refused to cover the super-thick elastic plus two layers of fabric, I just used a fairly wide zig-zag to topstitch.
I hemmed the legs using the coverstitch, though. The leg and crotch seams were serged, with an extra line of straight-stitching inside the seam allowance of the crotch seam.
It really is a fast pattern to put together, since it only has the two inside leg seams, the crotch seam and the waistband.
And, yes, leggings aren't pants. But, they aren't supposed to be. If you really want to complain about this "new" fashion, it's been growing on us, as a society, for about 900 years. They're just more comfortable now that we have spandex.