Since when has replacing collector's edition cases been a major concern? OH SHIT I LEFT MY COLLECTOR'S SPECIAL ED TIN IN THE CAR AND IT MELTED, BUT I WANTED TO SELL IT ON EBAY FULLSTOP
That goes for everybody worried about replacing PS3 cases as well. Have faith in the companies churning out sports titles, please. They'll continue to create crappy games that will be good case donors.
Finally, why is it bad that Sony decided to make PS3 cases different from Blu-Ray ones? I mean, imagine the embarassment when you slip Metal Gear Solids into your Blu-Ray player 20 years from now*, and your kids have to correct you.
*I'm not asserting that Blu-Ray will still be a "live" format at the time.