on a separate note - Juggernaut.
if the line simply gave extra damage reduction - without the healing penalty in pnp - then it might work. maybe a static slashing guard effect - d6/2d6/3d6 for each tier.
Charge is out in DDO - so maybe extra tactics dc's? That might be too much if they stack with racial/ftr lines. Maybe it wouldnt, but anything stacking should be viewed very harshly.
Instead of the immunities to death effects/ stat drain/mind affecting spells - maybe extra save bonuses to each - and making a WF Juggernaut immune to the Lob mournland debuff - after all if you are 'just the same' as the Lob, but smaller, you should be immune to the debuff - just like WF are in pnp in the actual Mournlands.