I do think that tights can be more feminine than stockings and suspenders. The look of a short skirt or dress just below the bum, is very feminine. with Stockings, the glimpse of thigh and the suspender itself is sexy, but doesn't really look feminine.
Mind you, I feel similarly about breasts-my own preference is not for size above all-it's pertness. An erect nipple ,on a 34 or 36bcup, showing through a lace bra, pointing slightly up and out, is to my mind, preferable to a really large breast. If I had real breasts, I don't know I would feel the same-as this is said from a purely visual perspective.