I did a lot of shopping before I just recently got my first climber. One thing that I noticed them all missing was a way to tighten the "platform" section to the tree. They all come with a strap to tighten the seat to the tree, and you have to tie a rope to both sections to keep the platform from possibly falling. I imagine this is because it's difficult and dangerous to reach down to foot level to attach a strap.
Do you suppose there would be a way to design something that's foot operated that could accomplish this? If you could, I'd definitetly buy it.