If you don't want to modify the levels too much, then I would say lengthen the string. Or, if you want to make the level design process easier, then making the string longer isn't a bad idea either.
The coyote time was very valuable indeed!
Glad to hear you guys are continuing development! I did enjoy playing it despite all of the feedback. Like I said I do see potential in the game! :) I am excited to play it after the touch ups. Also I was typing too fast so I missed some words in my initial comment, but the art and sound design was really nice! Especially the sound, it fit the mood very well considering a lot of the gameplay is puzzle based