Re: Why is voiding of warranty a problem?
Torx screws can hardly be considered "weird". You run into those all the time, well outside the consumer electronics world. Now if it is super small - last year I ran into some #0 Torx screws and needed to buy a driver for them - then you won't have tools on hand, but anything #6 or higher anyone who doesn't have tools for them doesn't have what I'd consider a basic set of tools for non-techies.
Now tri blade I don't have a driver for, so I'd need a quick visit to eBay if I wanted to open a Nintendo I guess...