Controlling 'Files' location

Hi All,

I'm trying to put some controls around where users are saving files within Teams as those that are not direct members of a Team e.g. management, can not find a Teams files. 

An easy example would be having a number of projects running, each with their own Team. Within Teams, their files are only viewable via Teams, and only by those within the Project Teams. Conversely, we have a SharePoint Hub with multiple Project Teams sites, and we can better control who can see what...all in one location. 

We make good use of SharePoint and I want to make better use of Teams but currently only use it for the chat/calls elements. I see that we can add a new tab within Teams and point that to SharePoint, great!. However I want to force staff to use this new tab (with its link to a SharePoint Document library) rather than uploading content to 'Files'.

I notice that we can change the 'Files' policy with 'NativeFileEntryPoints' so that we can use a "a third-party storage provider"...seems a shame we can use the one we already have i.e. SharePoint.

I have to be missing something here...Is there no way to redirect the 'Files' tab to a preexisting SharePoint location or just turn off the File tab altogether without the other impacts of using the above i.e. blocking OneDrive at the same time.

Thanks for any input.