In Pyanodon the research for the "Ghost Combinator" requires late-late-stage science packs (probably many hundreds if not thousands of hours for most players).

As the "Construction Robotcs" research in Pyanodon is based on the "Automation science pack" and "pY science pack 1", it would make sense to gate the Ghost Combinator behind those as well, instead.

Would you suggest same cost as construction/logistic robots? Or something else? I didn't take Py in account.

is that any better?

I'm not yet on 2.1 so cannot test. Will give feedback when I am.