Here's a thought: Why not in the middle?
Since fueling from one side or the other requires opening a crossover and that means there's fuel plumbing running laterally through the aircraft, why not tap in along that line?
It would place the fueling point lower, making access easier from the ground. And it could be reached from either side, giving ground operations some additional flexibility.
The down side would be having to park the pump truck closer to the aircraft rather than outboard of the engine (inner engines?)