Though let me voice my thoughts here on this front, Now in poly sculpting it does make sense to keep resolution low as form bulding is easier, but where topology is no longer a constraining issue, maybe a different appoach is required with this new tech. In Z-Brush for instance many of the brushes change drastically dependant on the resolution of the mesh being worked, for instance there is no real use for sculpting brushes at lowest levels, with predominent workflows using move rake and standard to build form. My way of thinking is resolution of voxels is really only there to aid performance, if Andrew can further optimise performance at higher resolution I no longer see a need to keep things low for roughing out shape. I have longed for a digital medium that closer mimicked natural material so i find voxels interesting for that reason. so I feel the stepping up and down levels may be a thing of the past in the future (Currently though agreed performance is the issue. So maybe in that respect if Voxel leveling (forward and back) proves technically impossible optimisation of higher level performance should be more a priority?
With the increase in voxel levels practially all the brushes behave more predictably so making a higher level in my opinion more comfortable to work in. but I reiterate that performance is the main issue for me, currently.
I am so happy to read this. I have been thinking along the exact same lines and thought i was alone.
This is one of the reasons i have been pushing for a fully functional voxel toolset. Regretfully, even after V3's official release, we still have to miss a flatten, a good working pinch, a clay like brush thats actually smooth (surface rapid brush is reasonably good but its a surface brush) and masking. This is also the exact reason i am not a fan of the hybrid surface > voxel brushes. The method has its uses in specific instances. The move brush is an example (which turned out to not be doable in pure voxels) But its a terrible loss of quality on sculpting brushes compared to their pure voxel relatives. In general the feeling of voxel brushes are much more fluent then their mesh based counterparts. The only thing holding them back is the brushes themselves. Poor performance under heavy loads. No brush profile curves. No sampling options. No good brush preset system etc. I totally agree focus should move to optimisation and to the brushes themselves.
Resolution truly is becoming a thing of the past. The entire "for smooth surfaces you have to stay in low subdiv levels" argument stopped applying long ago. With the increase in computing power many people bruteforce their way in high resolutions. People even force their way through topology restraints by subdividing spheres into insanity and sculpting heads from them. A big part of this is the tools. Without tools like clay/claytubes in zb and wax in mb it would be impossible to work in these high resolutions.
Voxels have an inherent advantage on the subject of resolution. They always offer uniform resolution. As ive shown in my voxelprimer this means that its easier to get the shapes you want (and much more intuitive i may add) even at lower resolutions. While performance is important (and multivoxelresolution would help) it will eventually cease to be an issue, but 3dcoat does need awesome tools/brushes. Zbrush's technology may be inherently flawed but the implementation of it is extremely high quality (generally speaking about the brushes themselves). I hope Andrew sees the potential that lies in a pure voxel approach but the fact the voxel toolset isnt even complete makes me wonder sometimes. I hope he views your work and reads your opinion.

If anything should convice Andrew why he should go pure voxels its the second part of the GOZ promotion on zbcentral. It shows features which are, even at this stage, much easier to do in voxels. And the people go absolutely berzerk over it because these options simply werent available before. The market for a mature voxel sculpting package is immense!
Also your welcome and.. sorry to hear you lost your work.
3dioot