I don't think the bottom level is the problem per se, rather than the potential ceiling. I think we should stop assessing managers on accomplishing a minimum target, and rather assess them on if we think they are going to be able to deliver on the big prizes AKA PL and CL, and if things appear to be going in that direction, or not. That's what these other clubs do, rather than resting on their laurels and saying 'Well he managed to accomplish X minimum target, let's see where things go', rather they are proactive in getting rid of managers when it seems like they don't have enough to reach the heights deemed necessary by said clubs. That's what we need more of. As one of the biggest clubs in the world we shouldn't be letting managers skirt by on accomplishing some minimum targets.
Granted, that's what I think. What our board thinks may very well be completely different.