Just a currency that you get for sending helps to spend in maybe a clan store? Every level you go up in the already in-game clan level you unlock more things in the 'Clan Store'. Or the 'Clan Caravan' every weekend it comes around. Not sure if any of this is in the game already but just a thought.
Oh that would be sweet! Really incentivizing clan help and adding a better reason to do it in-game instead of just clearing the notification!