ohhh that's a cool idea too! I had the idea of giving more points for climbing a one-face (since it's harder), but I think I could use collectibles to grant those additional points. That way it's also visually indicated that the harder route will have a higher reward. Thanks for this idea!
PS: I feel like i need to point out, it was the linux version that convinced me to play it ;) This year, as so many others, is the year of linux gaming! :P