I'd like the ability to pop out project scripts into a separate window like we can with the Tools (Script Console, Database Query Browser, etc.). In general, the ability to pop out (and/or dock) any type of tabbed resources (especially independent ones like the script editor and named queries) (even Vision Windows and Perspective Views, if that's feasible) for a more multi-threaded designer experience could be really helpful to my workflow.
Projects I work on can get complex, and sometimes I have to jump quickly between scripts, windows, and named queries. It can be hard to keep track of where I'm at and what I was last looking at. But being able to see and edit the named query that's called by a function that's called by a vision component all on the same screen would make that process way easier. I don't know how big of an ask this is from a programming standpoint, but from a workflow standpoint, it would be huge for me.