I think that the brief for Richo is to clear the decks, and establish a new( and hopefully successful) organisational set up that can be continued by subsequent appointees.
I can see that possibly happening by mid year but he may stay on till season end then you may find perhaps one Mr R. Farah stepping into the role and making sure the model is adhered to. Hopefully he can do that !
Just my thoughts….
PS Barry hasn’t been sighted, or heard from as yet, so think he’s just overseeing from above, and will leave on or about when Richo does.