I've always thought that he wore that (1974) Sundial suit so often that last year because he was depressed and just didn't care. Ditto the 1976 prehistoric bird suits. That kind of thing's a pretty common symptom for people with clinical depression.
I've always doubted Mr Belew's veracity on this one, too....no way was laser technology such in 1977 that Elvis' suit could have contained laser devices, not unless it was a kaftan the size of a small circus tent complete with a crew of several laser technicians inside. A mirror-studded suit could have reflected laser beams, sure, or caught and scattered regular stage lights, but no way was a laser-equipped suit possible. Looks like Elvis wasn't the only one into James Bond fantasies...The rumour about the so-called "Laser Suit" is what it says; just a rumour. Kept alive by Bill because the fans like to hear it, it's just good entertaining at Elvis meetings.
It was meant as a suit covered with mirrors that would catch the stage lights and create the effect of lasers beams. In fact the technigue was not available in 1977 to create a laser suit.