Thanks a lot Gronkling !
I fixed some of these backroutes, but when it was a "stupid" solution that is clearly not intended and is a pain to execute (Craving to Burrow for example) I didn't change anything.
Some of these were not backroutes though !

- Cuba Libra, I know this one is easier than most of Hurricane levels but I put it last because i thought it would be cool to finish the rating on this amazing trick.
- Extremely Lem and blahblahblah : yes this one is extra lame, but the original solution was too backroutable so I made this stupid solution instead.
- Marble Gallery, There are more than one way to solve this one and you got the main idea so... it's cool.
- Rod Island... maybe this one seemed random to you but your solution was perfectly intended.
- The Escape Artists, the extra tools are simply red herrings.
- Unwilling Funambulist : as long as you use this miner trick, I don't mind about the rest !
Oh and this star in Blue Monday... it was here by accident at first, and when I removed it Akseli said something like "Why did you remove it, it was cool !"... so I put it back. That was the story of the Blue Monday lone star.
And while I'm here, welcome to Lopsy and grams88 on this topic !
