I got YET ANOTHER copy of Super Mario Land 2 at Goodwill for $5 along with the Game Boy Color I got and I got another copy of Super Mario Bros. Deluxe as a graduation gift from one of my classmates and I thank her for it!
Indeed it would be... but that would be up to Nintendo to decide IF they want to bring that one in the eShop. However, some of the features that was on the original copy of SMB Deluxe would not be supported sadly.
Yeah. I mean, the Game Link of the Game Boy AND Game Boy Color, as well as the wireless connection from the latter are not supported for the 3DS... BUT the game linking for any Game Gear IS supported, via its multiplayer local connection thingy, just like the NES games are.