Howdy all. Thanks for the responses.
Some points of clarification:
Indeed the ACR is an automatic charging relay.
The shunt is for a battery monitor (XBM probably)
As for fusing:
I'm aware of the rule and had the hoped that I'd be able to position the breakout bus bar close enough to use the terminal fuses (Blue Sea "Terminal Fuse Block") I mentioned in my first post. That may be unrealistic.
The diagram included fuses for all charging sources (and fusing for a windlass should one be added.)
Is the suggestion then to include for both starting and house to include dedicate fuse blocks? IE
house #2 -> fuse -> positive breakout
start batt -> fuse -> post for acr/switch
I further assume that even with these fuses I'd want to continue to include individual fuses for the charger/inv, alternater etc...
Overcurrent protection for the DC panel will be built in (it will have a main breaker)
Thanks again folks.