As I read your question you are proposing a device to increase the stability at the burner level, not at the bottom of the fuel canister. I don't see how it would compensate for an unstable canister and my system is working just groovy (toally awesome), but if you can demonstrate it's effectiveness I would consider it. Tripod down-rigger arms and such aren't likely to be taken seriously. KISS.

Just maybe there are more pressing issues. Can you design a more versitle tarp system for example? Currently I'm working on a small insulated box, for perishables, that will compliment my Bearikade canister.