An important part of a uniform is it's practicality. If you can't wear a bra, it's not practical. So bras are definitely relevant when discussing a uniform and a key part of a new uniform.... I'm not going to love a uniform if it's impossible to wear a bra with. Because a good uniform is practical, athletic, and pretty. Practicality and athleticism should come first - not the aesthetic appeal. Make it pretty after you've made it functional. Maybe not everyone worries about it, but to those of us who are well endowed, it's important and something we think about. Sorry for being that person but you can't just shut down people's concerns about bras as if it's not legitimate.
And the clear strap argument is laughable. Just no.