It's very difficult to just tread water, in this division. To just pootle along. Who manages this? So success is getting promoted and arriving back in this division as one of the minted, PP clubs.
Lansdown realised this, hence the rather steep challenge put before LJ: play-offs, minimum.
If we don’t get promoted from this division, going backwards at some point is almost guaranteed. So, I say again, success is promotion even if we're immediately relegated.
This is why LJ failed.
Look where we are now.
Rotherham, Yeovil, Burton, they cannot hope to get promoted from the Championship when they get to it. Any club with 25,000 seats and 20,000 plus fans in the Championship has to get promoted nowadays. If you don't, you're going to go back and down sooner or later.
There's no in between. Not when, if you finish 17th, you're best player is off. Every time.
So, again: success means going up, and to have any chance of that, 6th is a minimum (even though it's a ridiculous "ask." Lansdown still has to ask it, there's no other option).