Would it be possible to make the recipe combinator have separate inputs and outputs, like the decider and arithmetic combinators? This would stop the annoying feedback that happens when you accidentally make a loop.
It would also allow for a few more situations. For example, I want to build a combinator circuit where I set an input (say a rocket part) and the output would be the number and type of ingredients needed to build the input. I'm pretty sure it's possible with the current state of the mod, but would take a huge number of combinators to add the ingredients back up.
Edit: Thinking about it a bit more, this suggestion would break current blueprints, which would suck. A possible workaround would be to add another item, "Recipe Combinator MKII" or something that works per my suggestion.