Suggestion: Late game retooling/robot upgrade

I saw the latest dev video about the future introduction of retooling between different car modes and how it would delay the stations.
An interesting suggestion I came up with is to introduce a late game upgrade to the stations called “multitasking”, or something similar.
This upgrade would require the highest robot upgrade and allow the station to change between different car model without any delay but instead at a permanent speed decrease to the station.
The idea behind it is that not all the robots would work at the same time as some of them are preparing for the next car, and retooling if neccessary. The benefit of this would be a better flow of cars if you have a mixed belt.