>"The only free lunch is a cold one" Nice turn of phrase, Dale.
I have refilled canisters, but usually to have a different blend of gases in it. I like the can of tomatoes analog - we don't hesitate to use the tomatoes and pat ourselves on the back when we recycle the steel can, but somehow a steel fuel can is different?!?
HYOH, Bring your own stove.
I play with alkie, esbit and have, for large groups, even resurrected various white-gas MSR stoves. Operative word being "play" - on a one or two-night solo trip. All this after starting on SVEA-123s, Optimus 8Rs and wood fires decades ago.
Don't know how much is left in a canister? Got a laundry marker? Weigh each on your gram scale and mark, "Full = 357 grams" or whatever. The label tells you the fuel weight, although when I exhaust one, I weigh and mark all the others of that type, "Empty = 132 grams". Now you can assess its contents instantly (while you're packing). *clever idea ahead (separate post to follow).
Consider that having a less capable stove costs you something, too. If I'm gathering twigs and pine cones, or waiting 12 minutes for a cup of tea, that is time and often heat loss that could have been spent hiking or looking at the stars from inside my warm sleeping bag.
Most commonly for solo trips, I go with cold food (and always for the 30/40-mile day hikes). That has some weight penalty, too, as foods that are reconstituted with water and heat are typically lighter per calorie than the wraps, sandwiches and brownies I bring as cold food. I still come out ahead, but my point is that a more capable canister stove can save you minutes of cold exposure, some ounces of food weight and also be a safety benefit - a couple of branches or drift wood catch fire a lot faster atop a canister stove than a alkie or esbit stove - something I made use of when my wife swamped her kayak once in the surf at 59 North.