Mod assignment slots for toons

Hi!I was wondering if you could adjust the number of mod assignment slots available for toons.Atm we have cca 256 toons and approximately 250 sloty available for them.It should be 2 slots = 1toon.I find it difficult and demotivating to manage this,since I dont even have duplicite slots.If you could actualize or improve this,it would be amazing!Thanks in advance.