Check some games where at least one team used Look inside or other inside tactic. Lots of blocks.
in my games it was 4, from the opposing team and two of mine - and both with inside tactic did you mean that?
Last season the average of blocks in the Bundesliga was betwen 7 and 8, after the first game 8 blocks are top and maybe a small around 4 is average.
To make this skill more sufficient, like it was in salary it is not usefull.