I’m going to take a guess and say this behaviour is user requested. The dev team is really good at reaching out to the community for comments and suggestions. They don’t seem to make autonomous UI decisions (from what I’ve seen anyway).
This pop-up palette is getting a big overhaul in 5.3, all of which has been driven (and created by) users. I don’t know if there is anything in there related to your request but it might be worth a read through. At the very least, you’ll see who is working on it and they might be able to answer your questions better.