Increase the "normal/mod skill limit" from 10 skill to 13 skill with this condition: you can equip 13 skill from your skill tree (HA and MC excluded) but you can't use more than 10 normal skill or more than 10 modded skills (this mean that you can equip 10 unmodded/normal skills and 3 modded skills or vice-versa).
Force skills aren't that good and increasing normal/mod skill limit it's good to add variety to our gameplay.