RE: Treestand design ideas
I actually design stands - have designed stands for around 5 years for Lone Wolf. If you've never used one, I'd suggest doing so. The cast platform is the biggest advantage as far as noise, strength, and life cycle. As far as I'm concerned, it solves more problems associated with "in-the-field" features and benefits than anything. It's the stand to beat!
I would highly suggest you look into liability insurance before selling anything, you are putting your personal liability on the line, and if you haven't noticed, there are very few "small" stand manufactures around for this reason.