snowkatt: they missed a trick there with making the cardridge port just cosmetic
it could have hidden an sd card reader and they could have sold game packs on sd card
but nope that would have made too much sense
still its decent for what it is cause nes games are ridicilously expensive these days
i'm fairly convinced they didn't. if there's one thing nintendo does, it's to trade on their nostalgia factor like there's no tomorrow. so, internally, i'm almost sure the logic has been: "if we can sell this for $60 this year, we can make another one and sell it for $60 next year."
i'd almost be willing to bet that the logic extends a little further, too: "we can even recycle some of the games."
[and remember, nintendo can only put onto these "classic boxes" what they have access to through agreements-of-sale. so, they might be able to come to an agreement with - say - capcom for megaman, because capcom still exist and you can get hold of their lawyers, but obscure/dead to the annals of time stuff, well...if you're interested in that, you're going to have to play it through...questionable means.]
plus, there's that omnipresent ridiculousness of "nintendo gonna nintendo." [cf: the name of the wiiu. and how difficult it was to move stuff from one 3ds to another for the longest time.]