1. RFTools Control's tokens are just like our variable cards, except they can only hold what we'd call materialized values. We should be able to write them via a materializer and read them via a proxy.
2. We should have a way to send signals to RFTools Control's processors. We could do this with one of our aspect writers, but I'm not sure which one would be good, or if we should add a new one.

Something for https://github.com/CyclopsMC/IntegratedDynamics-Compat

Also a good idea, but again something I'll probably never get around to implementing myself :/

ID variables are capability-based, so reading RFTools tokens should be easy as we can dynamically attach capabilities to these items.