Amount of players.

[Darren Power]

22 is fine but ive seen alot of teams deploy this strategy ,to great effect i might add but in my own opinion if i wanted a half crap n half good team id do it but each season ill pick bout 4 players that wont play till next season only power train,this too could be considered cheating yet its what a manager really does...to bring on players that turn out excellent(Morata below,as is Gotze are prime examples ive had since both were 18) is just a tactic like the extreme one you mentioned