Yes, the only way for immediate change right now is by pressing the buttons on the patterns, which I admit is a pretty fun way to use it, and I’ve played with it live as a desktop unit doing this. Anything is possible for future updates but as Dan mentioned the wishlist is how we process new features.
For Step the wishlist has not opened yet as the roadmap is already decided for firmware 1.1 and maybe 1.2 as well so we will wait until there is at least a chance of a feature being implemented before we start taking feature requests.