YES, yes please.
Aside from the security issue it's such a waste of time and so confusing for people.
It is utter ridiculous that we still have to take ages to try to explain to people that they can't see the file we're talking about because they don't have any concept of what is because they've never seen the extension, even if they have any idea of what extensions are.
Then they'll try make their new file, only it won't work because notepad will save it out to 'config.cfg.txt' except of course they don't see the
I'm still shocked they left this unfriendly waste of time in windows 7, let alone 8 and 8.1.
Until windows uses a system similar to OSX for determining file type and exec status which is probably never going to happen, it is just a real hassle for a huge number of people to try and just hide it away and make out it's the same thing.