So far, I don't like this idea; you didn't flesh it out much, and it's a bit too far fetched for the Minecraft world. I would rather see something similar to a grappling hook, a climbing pick, etcetera. Think out your idea some more, and more people will better understand what you are trying to suggest. I don't support this one way or another, but good luck.
How to make it
The Gun Powder is x4
The coal/charcoal is x6
Tnt is x2
It can help when making ladders onto towers and stuff like that. This is, I think a bit too techy but it would help.
[Leather] [Leather] [Leather]