I hate all the wires going from the battery terminal. What I do is, buy a small fuse block, and run a large gauge wire to it, with a 30amp fuse inline. Then run all my accessories off that fuse block. So, if you have a issue with power to something, then you can take a volt/ohm meter right down the line till you find the blown fuse.
The issue with fusible links is, when they blow, they discolor. But most of our rigs are dirty under the hood, so its hard to find a discolored link.