"Make Incarna use the Dust Engine".
The way I see it, Incarna has at least a pretty awesome way of creating Avatars and using them in the 3d World, whereas Dust doesn't focus on superrealistic faces. For a true MMO, I prefer faces that are actually faces. Mind you, the Incarna Avatars tend to look similar to some extent, too, but that imho stems mainly from the limited selection of hairstyles and clothing.
But Incarna is still 'meh'. It does eat resources like a feral beast from hell, and at least on my machine, the rendered avatar looks not very good in the CQ. By not very good I mean: Terrible lighting and (despite GPU frying) a low quality that my character doesn't actually look like what I've done in the high-quality character customization. So that., yeah, it looks a bit like "generic head+Hairstyle5".