In theory yes, but most people would agree that modern football is won/loss in midfield, a system that constantly gives the opposition an advantage in that area (one of the reasons imo that we struggle against "lesser" sides as they often have 5 in midfield) is a high risk setup.
The club is in an interesting place, yes we have made a lot of investment in this system but we are still short CB, LWB, RWB and probably some kind of CM (goal scoring threat option)
A switch (which I agree with previous comments is likely only with coaching change) is really that different in terms of total player change?
Hos are we short at lwb? We have perisic, sessegnon and destiny on loan.