Resistance in series with a MOV defeats its purpose. I would hope those aren't actually 10 ohm resistors, but placeholders for something like a thermal fuse, which disconnects the MOV if it fails (overheats due to excessive leakage current).
The 10ks are probably just for tweaking the response. A CMC has a parallel resonant peak, below which it is inductive, and above which it is capacitive. Resistance in parallel reduces this peak, but also broadens it, and maybe that's useful in combination with whatever capacitances or other parasitics are in that particular circuit.
Large value resistors don't do anything for ESD or surge.
Note that the inductors are coupled, so that mains current is balanced between lines and the core can be a high-mu material. Individual inductors don't have this advantage, and must be rated for saturation > full peak load current, otherwise they stop being effective and some noise gets let through.
The neutral rectification is bizarre, or at least very unusual. I can think of reasons to do it, but it shouldn't be done for most three phase equipment.
Tim