Simply put: more unused skillpoints you have the higher your damage.
One of the things i've noticed is a lack of interest in getting skill points past just filling out the needed skills. I've also noticed that ZOS is trying to encourage players to do more content. What if you make it so that you get a bonus to weapon and spell damage for the amount of unused skill points. Say: skill points x3 or x5 I have 20 unused skill points atm on one character that would be 60 or 100 wep/spell damage boost. Not a huge increase no but one worth getting for endgamers who are going for the maximum possible damage. As a story arc this can be simple: The skyshards 'empower' the player with energy or something making them more powerful.
This will encourage players to go out and get those skill points from skyshards, from story quests, group content, new dungeons... etc. As i see it, this is a win/win for ZOS as it could encourage more players to play base game content and such.
@ZOS_GinaBruno @ZOS_Bill <-- these pop up when i start
@zos. Hopefully it reaches the zos staff for review.