replies:
1. the notebook arrows are fine when you have only one editor window open. if you have two or more open, in the worst case the open editor you want to see is on the third editor window, after you clicked through the arrows of the other two (in each direction of course). and if you have more than about 20 files open at a time, the notebook arrows are not really fast. using the mouse wheel is the same thing really... with the popup menu, you have a instant alphabetical list of all open editors, just one click to open it and another to choose the desired editor
2. as far as i can see alt-g lets you search for one specific file in all of the workspace files. my addition is just for finding one specif file among only the open files, and perhaps the name is long and cumbersome to write and one might not even know the exact spelling of it.
(3.) the discover-ability... this is the weakest point of my addition i think... but i came up with the idea mainly because i found myself more than once clicking (without really thinking) on the field of the status bar, where the name and path of the active editor is shown, and then noticing, after nothing happened, that i was kind of expecting to see a list of the other open files pop up...
but, alas, i started the thread, because i gave it a try, implemented it, and now find myself using it every day... that’s why i wanted to put it to the consideration of the devs: i found it to be quite usefull
and not at all intrusive or complicated to implement