Just asking because I don’t think I am grasping what you mean - how would you picture this new tab view? How would it differ from the file explorer tree view in vscode as it currently exists?

edit. I think I got it actually - fileA fileB fileC are all split but in one folder. You can then open all 3 in a single tab as if they’re one file?

I can't help but would like to add that this seems like a really really cool idea. It could even be extended to support CTRL+F to search between all the open files, there's a lot of cool possibilites. Just throwing this out here in case it doesn't exist and someone feels motivated to make it.