I seriously cannot wait for glucagon pens similar to insulin pens. I'd even be willing to wear two pumps if pumping glucagon became a thing. I think that could really change diabetes treatment, even just aking the fear out of lows could be huge, if it's faster-acting than food. (And, yes, all those saved calories would be awesome!!)
I also can't wait for a glucagon auto-injector for emergencies; that's something I'd actually carry around instead of just keeping it in my fridge, because it's simple enough to use that you could just incoherently hand it to a stranger and they could figure it out (or friends/family/colleagues would actually remember how to use it after one quick lesson).
If stable liquid comes out in the US before Canada (which, given that everything else does, it probably will), I would seriously find a way to travel down there to get a prescription for it and pick some up.