In principle I like the idea. In practice I just dont think it works.
While I agree clubs are often to hasty to sack a manager, I also think patience and support needs to be earned, not given blindly.
For example, your manager is not getting results and the team looks like brick - time to worry
your manager is not getting results but you can see his ideas and methods bedding in, have patience, its transition...
In the case of either Rodgers or AVB, they both have some common traits. If we gave one the job we would be giving it to a meticulous person, with a set system of play to employ, who would need time to get the players to buy into it and adopt it fully. In either case there would certainly be a transitional phase, with wobbly form. Im happy to take that on, personally, so long as I can see things changing for the positive.
With Rodgers and Swansea its been a great partnership. With AVB and Chelsea the opposite. I think in either case its pretty obvious which is/was working and which isnt. If it looks like it is working then great, patience a plenty