The recently added rocket recipes are great in theory, however right now not really usable since you don't allow putting in productivity modules. Even if you don't use any other modules in your base, you really want to put the good tier-3 ones into the silo to hugely reduce the raw resources needed to launch a rocket. Of course it's a little bit different from "normal" recipes, as the productivity gets applied to the hidden "rocket part" intermediate, not the science output from the launch, so it will need some special handling, nevertheless I'd say it's necessity before you can actually use the new feature.
