I highly doubt you'd pull enough amps long enough to damage a Li-Po, except maybe in some extreme circumstances, in which case a big Maxi/Blade/Car fuse on the Li-Po should suffice.

I'd just consider what you want to protect, so ESCs. If you burn out a motor it'll kill the esc so put a ~30a fuse there.

It would be a real shame to lose a fight beacuse you blew a fuse, but at the same time if I motor dies you've lost anyway so don't let it take more componenets with it!

Putting fuses in parallel is just more potential points of failure in your bot. I'd avoid.