Why would you want to? You are making huge manpower savings for the company. Massive.
The more types the more pilots the more jobs the more upgrades. Less type ratings less jobs etc etc. surely that’s industrial 101.
This bulls$1t attitude the MFF is good for the pilots needs to stop here.
Who cares about the practicalities of it, industrially you are screwing yourselves if you allow it.
Move on........