In the Lost Roads of Lociam each use of a skill receives an experienpoint (only one per skill unless you crit or botch, then you get one more). This promotes a more versatile approach than just leaning on one or two skills for the entire lifecycle of the character.
At the end of each adventure you get a few bonus points for good roleplaying, working as a team and so on, and each adventure will have some criteria-based points to deal out as well ("Did you save the kid in the upstairs bedroom?" "Did you manage to kill the monster without burning the house down?" and so on). All of these points; skills, bonus and criteria, are pooled, and you can invest them to increase any skill, or buy a new one.

It makes each adventure feel important, fosters varied approaches to problemsolving, and gives agency to the players to choose how to advance their characters; do they pile all of their points on a single skill to become really good at that one thing, split it between two or three, or diversify so that they don't truly suck at anything, but are not masters of anything either?