It is not always in a team's best interest to hire all the possible assistants. The effect of each additional assistant decreases fast. The effect of additional assistants most probably follows a square root dependence, just as economists do. Hence four assistants improve the training twice as much as only one assistant does, and 9 assistants improve the training three times as much ( sqrt(9) vs sqrt(4) vs sqrt(1) ).
Another model suggests that each additional assistant coach is worth 50% of the previous. If that is the case then you get something like this:
* 1 = 100%
* 2 = 50%
* 3 = 25%
* 4 = 12.5%
* 5 = 6.25%
* 6 = 3.125%
* 7 = 1.5625%
* 8 = 0.78125%
* 9 = 0.390625%
* 10 = 0.1953125%
(http://wiki.hattrick.org/wiki/Training)
Volgens het laatste model is meer dan 6 assistenten inderdaad verwaarloosbaar. Ik had er 6 plus 2 keeper-trainers, dus na samenvoegen heb ik er 2 ontslagen.