Both game compatibility and sound emulation have improved, and are a lot better, with some games (ex. Mother 3) no longer crashing.
There are still a few bugs left to fix, such as sprite flickering in certain games.
Google around and see if someone's made a save editor.
If no one's made a save editor, then you'll have to reverse-engineer the save format on your own. This could potentially be very easy, or it could be borderline impossible.
Just a few weeks later, the DMCA takedown hasn't changed anything.
Use the latest official Citra if you want a polished experience.
Use PabloMK7's fork if you want more mod support.
etc. etc. etc.
The problem with X party blocked X bill that would have prevented X is that yes the bill probably would have worked great, buuuttt they put XYZDCBG in said bill as an attempt to sneak things in that tend to be completely unrelated to the original bills intent. It sucks because if they would just do a single thing they could probably get something done...