You can't vision a land based off Game&Watch and Duck Hunt because your brain isn't big enough. Give me enough Monster Energy, Duck Hunt zappers, and sharpies and I'll have a Duck Hunt land that'd make DisneySea cry in shame for being the worst thing ever compared to it.
I think Kirby could work as a land/mini-land attached to mainline SNW. But I'm biased because I love the pink puff, so other voices that don't have a bias should comment here.
Animal Crossing is in the same vein as Kirby, maybe the attraction can be a train ride across a "town"? Museum walk through attraction? I don't know. This has stumped me in my brainstorming sessions.
I think TLOZ has an issue of "what type of TLOZ do you focus on?", but once that's overcome, I can see a land for it working out.
I do think Wario deserves a ride though. Imagine a Wario Log Flume or something. I don't know.
Anyway, tomorrow is my EU day!!!