Agreed. This could replace ZB if it can elegantly handle subtools, be a bit more effective at local detail, and keep improving the brush feel.
I have used alpha42 a bit now (http://www.karyblack.com/wip/wp-content/up...ha42-sluggo.jpg), and it's pretty remarkable how far it has come from alpha38.
For brushes I'd like to see the base settings well exposed so that we can find the best settings ourselves (ie: one of my favourite ZB brushes is a standard brush, with a touch of pinch and a sharp alpha -- basic adjustments, but it makes for a great cutting stroke that helps with both lay-in and detailing).
Subtool handling is pretty obvious, but important. I really don't know how you can do that with voxels, but I hope you can bring something together... even if it's just a (reasonably high quality) poly approximation of the inactive tools -- just something to let you know what you're working with.
Being able to localize the detail would be great. In the above sketch I don't have much to work with in the face area, but if I go to the next level it's too heavy (it would be workable for final details, but I still need to shape out the face etc). Perhaps there is already a way around that I'm not aware of?
On the none voxel side it'll be great to see the ability to paint on a normal mapped right in the viewport... really looking forward to seeing that
Tremendous progress at an amazing pace, best of luck going forward