Bleeched skulls locked to Chaos - why ?.

[Diggot]

Back in Warhammer Live my choppa, and many of my friends, were using 5 bleeched skulls
as the only trophys on all our charaters. Nothing like carrying around 5 human heads as a reminder
to other humans ..

But in RoR, the bleeched skull trophys are locked to Chaos, and there is no similar trophies
for the other races, except the wolfskull which is grey in color and looks much much worse.

I need my 5 humie skulls, makes me chop better !.