^ Link to the Past hasn't been on the eShop (if it had, I'd have gotten it). Four Sword was, and I've got that. LttP has only hit Wii's VC so far, and if it hasn't already, will probably be amended to work on the WiiU as well.
If LttP does hit the 3DS's eShop, I don't think it'd be as a VC game (SNES's resolution is higher than the 3DS, which matches the NES's specifications). It'd be interesting to see what they'd go with though.