I often fins myself trying to move together some editor tabs, especially when I intensively work on 2 files ignoring for while other files. I would like for those files to have tabs together.

Other times I work on a subset of files, and I subconsciously remember their position. Then I look for something and period of code/file browsing occurs, in result files that I have worked on get closed, when I open them again I keep looking for their tabs in wrong place. I would like to rearrange these re-opened tabs so they are in the place that they have been previously.