Buissnesman drugs buff

[Lestrange]

Hello, I have some doubts about the validity of the businessman bonus.
If every other class in the university can get 7 + 50% extra drug production, that's a lot. Only at 12lv does the businessman achieve such a bonus percentage, and yet this is his main development statistics.
I wrote quite spontaneously a little update of the bonuses for businessmen of every level. Also at level 7, get 50% extra drugs.

26% -2lv, 30% -3lv, 35% -4lv, 40% -5lv
45% -6lv, 50% -7lv, 55% -8lv, 60% -9lv,
70% -10lv, 80% -11lv, 100% -12lv

best regards, and im waiting for other ideas

P.S I just add that no class has percentage negative drawbacks to drug production.
Additionally, VIP adds + 15%, i.e. the thief class can reach a maximum of 65% additional production at level 7.
The businessman as the main production statistic has a very low level of value compared to other characters who do not have drug production bonuses. Unfortunately, item 600% does not solve this problem, nor does it affect it, as any character can use it.
The unique bonus of the businessman is the additional drug production.