It's not really an issue with priority in this case, the trigger and action was causing issues in a deeper multifaceted perspective. As for prioritizing rules, the beauty of Smart Actions is that the system is designed to auto-prioritize so the user doesn't have to worry about such things. But if there is a strong need to have the capability of manually prioritizing rules we could implement it exactly the way you described. This is something that we are aware of and if users want it then we can "prioritize" it on our list. Ha, get it.