Adding alot of new features wouldn’t make blender automatically better, it would make it bloated, like alot of applications.
If you let the developers concentrate on refining the current areas of blender, so when when 2.5 comes out it has a very solid foundation for it to grow from, then the developers CAN choose what areas they would like to work on, as it is there decision at the end of the day, we can say we want Zbrush in blender, but currently that will not happen and i don’t see a problem with that.
There are a few diffrent sculpting programs now Zbrush, Mudbox and 3Dcoat that is quite abit of choice.
I honestly don’t see the problem to be honest, in blender you can model a character, even out of cubes and get it looking nice with the Multi-res/ sculpting, if you know what you are doing. I mean that’s what the modeling tools are there for.
EDIT: Having the options to paint normal maps, that would be very welcome, by the way i don’t have a problem with bringing features in that currently can’t be done and would help alot. But i just feel the idea of Zspheres in blender a waste of time as you have a full set of tools that are way better and allow more control than Zspheres.