I outlined another option to make the Skill proficiencies more attractive in the linked thread (and copied below). The thread also has some options presented by other folks. These are sort of numerical options, but sort of not.
Making the higher proficiency levels have more impact
I am still in favor of some way to eliminate the die roll out of combat.Personally, I would prefer something like below:
Untrained: Level -4, any checks you are allowed to make, you must roll.
Trained: Level+0, Out of combat you can choose to Take 5, rather than roll.
Expert: Level+1, Out of Combat you can choose to Take 10, rather than roll. In combat you must roll, but your minimum roll is a 2 (no autocrat fails due to a 1, although if your roll+your skill modifier is a crit fail then you crit fail).
Master: Level+2, Out of Combat you can take 10 rather than roll. In combat you must roll, but your minimum roll is a 5.
Legendary: Level+3, Out of Combat you can take 15 rather than roll. In combat you must roll, but your minimum roll is an 8.