While I think that there is a role and a place for small flowered daylilies in almost any size garden (not so much true for the minis, imho), I have always preferred the large flowered daylilies, the larger the flower, the better. Over time, this has evolved to include some UFs and "the taller the scape, the better", regardless of the flower form.
I don't think that I'd want only 4 ft+ tall UFs in my daylily garden (anymore than I'd want only yellow daylilies in my garden, although I do love the yellows and think that every garden needs at least a few) but I do love the ones that I have, and will probably always grow some. (But it is also just as true that I love my small flowered daylilies, and will probably always grow a few of those
Enjoy your "talls", Frank - and I'm glad to see that others like them, too!