Yes, so the matter that intrigues me is that MTH intended to include opening doors in the R-1 per the catalog announcement and later changed their mind.
It's not really a compelling feature if the doors don't open upon command rather than manually, so perhaps they changed their minds after assessing how much work it would require to include Lionel - style opening doors. Certainly the R-1 interior wouldn't be as nice as it is if it was cluttered up with Lionel - style door geartrains and wiring.
