Not missing it, but not minimizing the time impact like some people (cough) are. Lucky for me I don't have to speculate, there is real data available to predict the impact of what you are proposing. ANY storage change on the Mac Studio line results in an immediate 1 week delay. That's what Apple thinks it needs, and it is in the business selling machines so clearly they would want to minimize the time delay like you do. But nope. 1 week.
um. look I like getting things first day like the next person, but hey, a couple of weeks out of three years is 1%. you want to play the math game, wait a couple of months, get it on sale and save 10%. Well, except you want a custom build and those don't go on sale. Waiting two weeks is just part of doing business if this is the machine you want.
first world problem.