I had a user bring up an interesting issue today. They created a channel and called it "Forms". When uploading files to that channel, all sorts of errors started to occur. His thought was that it is because there is already a hidden folder called "Forms" in the Shared Documents library in SharePoint. Although a user could create a channel called "Form" (singular) and then rename it to "Forms" later, an end user would not know to do this without instruction.
If the explanation above is true, is Microsoft working on putting an error message on the channel creation box that says that name is not available? Otherwise end users will just think that Teams is broken.