I think Miniskirt's formal directness is intended to mirror the directness of the lyrics. It's probably the band's most clear and assertive song lyrically and there's no mistaking its blunt critique of our puritanical sex-shaming culture, so I think they decided to take a standard ballad-type sound to aid in its straightforwardness. Then as it gives way to (presumably) Raph's personal experience, it gets more hectic and she goes a bit more wild with her voice. As for Taste, I think it's just a pretty love song, really. I dunno if the piano chords strike you as overly sentimental or cheesy or something, but the production seems great to me for what it is.
There's also a really fine balance in Raph's vocals throughout the album; while on Native Speaker she went all Avey Tare almost constantly, and then (I feel) didn't use her vocal talents enough on the colder and more minimalist Flourish // Perish (In Kind excluded), there's more discretion here, with her singing more quietly and calmly and breaking out the crazy and emotional vocals less often but more strategically in a way that makes the songs more cathartic. She also goes beyond just "calm voice" and "loud emotional voice," like in Getting Tired, in which there's this shaky exhaustion in her voice, which fits the music and lyrics (clearly about depression) perfectly. Really it's an extremely cathartic album as a whole, when you take both the music and the lyrics into consideration.
I'd also like to mention that Braids' percussion is always on point.
Lots of rambling. Whatever.