I'm curious because while I've also thought "yeah, these are increasingly overdue for an updated look," it's hard in practice for me to think of changes that I'd really want. I'm typing this on an M1 MacBook Air, and...I'm not saying it's somehow reached the apex of perfection, but other than a wider range of colors there's nothing that immediately comes to mind as an answer to "I wish the Air had [thing]". Smaller bezels? Maybe, but it's not like they're a glaring huge problem. A different shape? Maybe, but again, this is just such a nice one. They could bring in more of the current iPad/iPhone design language, especially on the MacBook Pro rather than the Air, I guess -- which is widely expected for the next refresh, so you'll probably get your wish in that regard.
I have a G14 with anime matrix led display and it's pretty slick looking (so cool how it lights up) [1]. I understand it's not as minimalist as a macbook but I've been blown away by the amount of comments I get on it's looks.
It completely goes against Apple's design DNA but maybe it's just the super minimalist approach itself I am finding tired. I like spice & variety.
[1] https://dlcdnimgs.asus.com/websites/global/Products/xccq31kw...