Well I can’t say I’ve given much thought into what we’d be able to do with ropes … I’m not sure if we’ll have that level of freedom to do whatever it is we like with them …
This thread has some interesting discussion about what ropes might be used for, although it doesn’t talk about ropes specifically
As for what I’d use them for … crane systems to move lots of goods far distances … bridges … some sort of trap/ mechanisms … the usual stuff!