The Mass Effect Trilogy
EA got its fingers burned when it ported Mass Effect 3 to the Wii U, but if it wants to try and increase the meager return it got on that investment, it could do worse than to simply port the Wii U version to Switch in the way Nintendo did with Mario Kart 8 Deluxe. And while they're at it, why not throw in the other two Mass Effect games? Nintendo Switch owners would surely struggle to resist the lure of this fantastic series, by which of course we mean we would struggle to resist it. Come on EA, it'll take your mind off Battlefront...
Grand Theft Auto IV or V
This probably feels a bit unlikely, but why not? Rockstar has already demonstrated an interest in Switch by porting over LA Noire, and if that game ends up in enough Christmas stockings then we can imagine the temptation to bring GTA to Switch might start growing. Again, the online modes would probably need to disappear, but the single-player adventures of either GTA IV or V would be a great fit for this format. Rockstar has brought GTA to Nintendo before, notably with the excellent DS game Chinatown Wars, so there's all sorts of precedents for this. And in the absence of any new single-player content for GTA V, we certainly wouldn't mind an excuse to revisit these games in their original forms.
Red Dead Redemption
Finally, let's really go for broke. Apart from the enjoyable Undead Nightmare expansion, Rockstar never returned to Red Dead Redemption to deliver the usual PC port or any other series extensions, but it's not too late. The long-awaited Red Dead Redemption II may be only a few months away, probably destined to be a Game of the Year candidate for 2018, but Nintendo Switch owners will miss out on that, whereas a quick port of the PS3 and Xbox 360 originals to Nintendo's new format would be very welcome. It was, after all, a fine animal.