I dunno, emulation on one of if not the most powerful portable mobile device currently on the market that I already own?
That has controllers already on the device?
Well, except for the cat-and-mouse game you'll subject yourself in order to do so, and any given patch potentially breaking said functionality or the lack thereof for game access. Since the switch has nVidia's security TrustZone, which isn't so far so much as touched and likely considerably better guarded, you're going to regularly see obsolescence with updates. Until they can crack that, which is years of ARM secutiry research, they're going to potentially not get very far depending on how baked into the functionality of the system it is. (That's the problem with much of the current news, yes they've dumped the kernel and some encryptions, but we have no idea how far it will get them or how long it will take them to get anywhere with it.)
Right now, they're trying to reach kernel userland which can takes months to years to who knows how long before it even becomes publicly available *if* it does become publicly available. And the way these groups generally work, they don't release a major exploit until after the kernel/firmware is patched, potentially, multiple times.
Which means, come 3.X or 4.0 major patch update to the firmware, if this vuln is leaked to Nintendo and, say, they add ASLR to the kernel, you'll basically have to not update on a promise of "someday" having access to the exploits now being found and, effectively, lose access to the eShop and any future releases until someone either figures out how to roll back firmware or cracks high-level encryption.
In general, a lot of these things are becoming more and more tedious to keep up with. This isn't like the old days where you could flash the Wii to homebrew in five minutes off a harddrive and be done.