Yes, tweening a variable was mostly to make use of the easing in styles, and also for plugging in tweened variables so that we can try tweening things that are not yet supported ourselves 
Always willing to be a guinea pig (although do keep in mind I'm a pretty basic coder in terms of skill level (pretty extreme coder in terms of ambition sometimes
))

Always willing to be a guinea pig (although do keep in mind I'm a pretty basic coder in terms of skill level (pretty extreme coder in terms of ambition sometimes
