I think the idea of a permanent clothes shop with basic clothes and rotating rare blueprints is a great idea. You could buy basic clothes and dye them yourself easily that way. And maybe buy a catalogue to store the rare blueprints like for furnitures. I definitely feel like I miss out on clothes in the game. On my 1.5 save I wore light clothes during character creation and come winter I wanted to dress differently. I got a nice red hoodie but I couldn't figure pants to go with it just from the wiki. I gave up for a while and by the time it was spring I still wore shorts with a hoodie, pretty bad combo and immersion breaking. So an in game shop with basic clothes of rotating random colors (not all at once, you can always diy dye :), and a "try item" option would be amazing and make the Valley feel more vibrant and alive with a community. Much better than one girl having a sewing machine and visiting the desert far away to be able to buy clothes randomly, and in line with the Valley being self reliant in the lore. Maybe Emily could even own a pasture of sheep with the shop or outsource to Marnie.
PS: we need more pants options, compared to shirts and haircuts which are aplenty.