Can you add options to disable some bonus ? I don't want to play with some and the inventory space delete items with the infinite inventory mod on loading a save.

(Is there any kind of max level btw ?)

EDIT: i've failed my previous edit so don't pay attention to the other empty message below.

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Thanks for the suggestion! This has been added in version 0.3.3, so you can now disable specific bonuses.

As for max level, currently only Eagle Eye has one.

The option I'd love to have is adjusting the baseline experience requirements.
Right now it showers you with levels right at game start. In combination with the diminishing returns mechanic, it leads to a very front-loaded experience that topples the game balance right out of the gate.
Personally I would prefer much more infrequent and meaningful upgrades. The RNG nature of the skill selection already lends itself to meaningful decision-making, but only if you aren't showered by upgrades.