
I asked, because I’m not satisfied yet. I’m still loosing the overview when I have more than ~7 files opened at a time 
I thought about it a while, so one conclusion was, I need an optical identifier for each file. For websites that is the favicon… but for code?
The possibility to color the tabs is a cheap surrogate, in my eyes that is working, but when you color more than 3 tabs it is getting useless again.
My workflow is mainly centered around ~two files and depending on the problem I have to dig through several dependencies, which I need to get closed once the problem is solved. Therefore I developed the pinning of files. Works good, too.
What I really think is, that the tree view of the opened files is no good solution. It works better than having no view of opened files at all, but not good enough. For example one problem is, I tend to confuse it with the regular tree-view…
Where I find that in firefox? I have seen it never before…
One big question from me… is preview of code really useful ? like of websites with pictures and custom designs and stuff?
One the other hand, a spatial organization is a very good optical identifier. But how to spot the right file when all previews look very similar? ^^