That looks great! We actually don't add any flavorings into the mix outside of the salt + sugar, we did originally but found out we really liked the very smokey without anything added. I should really go back and try out some different options to see what's out there though.
We also usually smoke with "neighbor maple". Which is to say anytime a storm comes through a branches fall out of the big maple tree in our neighbor's lawn, we take it, chop it up, and smoke stuff with it.
Slicing is both the easiest and most annoying part of the process for me. A few years ago we managed to get a hold of a second hand commercial deli slicer. It works incredibly well, as you might imagine, but then I discovered why you usually don't have commercial equipment in your home. I use it maybe once every couple months, and it takes about as long to clean the dang thing as it does to actually slice something on it. I'm sure it makes sense in an actual butcher or deli where you're using it all day, but for me I do 15 minutes of slicing and then have 15 minutes of cleaning off pork fat. It sure does make nice even slices of bacon though.
Ooo, fantastic. I've been doing sugar extractions of lemon zest for a mead recently, and we tried drying and blitzing the zests after filtering.
For us the powder was nice (partly because it got a bit candied during the process) but fairly mild in taste. I think it could still absolutely be fun to use to sprinkle on desserts of drinks, for visuals if nothing else.