[Sephiroth]

Not sure that's entirely true. Some D1 services live on the D3 frequency plan and they, as you say, buggerate the load balancing. But a huge chunk are still on legacy frequencies not yet gathered into the D3 range. But it matters not a jot as to whether it's VMNG300 or Ambit 256 - we are agreed that they buggerate load balancing.