Nice idea. The current support in Cura works the same way (yes, the one UM people say it sucks).
However, I think combing might be a feature that sees some changes with the Pink Unicorn edition. The fact that the new Cura is based on pluggable unicorn (hey, the names are not my invention... :mrgreen: ) opens new possibilities for additional functionalities. However, this means, that it makes not much sense to invest too much effort into that topic at the moment.