Nice photo! But I was thinking more about a generic aircraft design than the specific requirements of the services contract. Whoever bids for the contract will presumably have future options in mind?
Pressure drop and the need for higher volumetric flow rates to provide the required pod pressure for the TriStar pod programme led to the need for larger pipe bores than initially specified - getting the fuel all that way to the pod pylon wasn't very easy. Whereas the A330MRTT has the huge benefit of taking advantage of the redundant outboard engine locations of the A340 and the existing fuel feed pipework.
The Victor K2 pods were low to the ground and the wing area where they were located was fairly generous - they weren't mounted at the wing tips either. So low were they that a plan to base the Victor at Scampton was ruled out due to the undulating nature of Scampton's taxiways and the need for much more cleared space adjacent to the taxiways than was required by the Vulcan.