My guess is come 3.5 the ilvl 240 step will be nerfed in the following ways:

Umbrites reduced to 150 lore
The maximum Crystal Sand and Umbrites required will be reduced from 80 to 40.

That falls in line with the massive nerf the 210 got. They could wait until 3.55 though and simply nerf the Aether Oils, which I also think we happen.