It's not really a UI thing, but this seemed to be the most appropriate place to put this. It's a very minor issue anyway - more a curiosity than anything, really.
Why is it that the retail PS3 version doesn't require the disc in the drive but the retail PS4 version does? I didn't use the free upgrade because I wanted to retain the right to play on PS3, so I bought the retail PS4 version and I noticed this. It was kind of nice having FFXIV just on the XMB ready to play at any time and while it's no real bother to put the disc in, it would be nice if I didn't have to.