Ilevels are such a messed up system anyway that changing ilevels between current 119 gear would only cause some gear that is barely hanging on for niche reasons (AF armor, Skirmish Armor, SR gear) to be completely disregarded for being inferior. People will again become anal about "ilevel 121 only" or "come back when you have better gear" more than they are already. At least if you're 119, that's one less thing for people to nitpick over.