I would personally like to see a rubber grip like those from Stanley staplers, they're very ergonomic, however, yours are easier and smoother to use. Also, I've seen guns in the past with built in staple pullers in the handle (where the staples are loaded). Although these do not always work, they are convenient to have.
I replaced a Swingline unit that would jam and break the staples that I inserted into the feed tube. Since I bought the T-50 unit I haven't had any jams or problems. Great working stapler.
Pros: Upholstery, General Repairs, insulation, chicken cage wire, rabbit cages
The T50 is designed with "old School" simplicity and places function first. Its perfect for doing insulation work in tight spaces. My only complaint is it works so well I have to keep stealing it back from my wife!
Pros: Flooring, Hanging Targets, Upholstery, Crafting, Wiring, General Repairs, insulation