I have changed my mind several times about how to proceed with my wiring changes. My goal, of course, is to improve reliability and performance, i.e. reducing IR losses. Further, I want to make troubleshooting faults quick and easy.
So AK, I'm with you on number 4 - reduce current loads on the fuse box. I arbitrarily selected 10A as the threshold for switching the load over to a new discrete relay with its own new (different) fuse. In addition, I am replacing all oem relays with new Bosch style units. That's not much trouble, but I've also decided to fuse protect the control signal (to the coil). Just a bit silly, I know, but if ANYTHING quits working, getting it sorted should be a breeze. Also, as you know, I am colocating ALL relays and new fuses.
At some point I suppose the question becomes why not completely eliminate the oem fuse block? That's just one point of my vacillation.