I feel the + marking will have to stop somewhere... You know, even C++ didn't evolve and named C+++
As for the balanced model, I'm thinking about it, but we don't have a schedule on that at the moment. However, if we do try, I do have a pair of AKG K271DF modified to take balanced input (using K1000 compatible plug, I prefer this over two XLR plugs), which should allow us to evaluate how much of an improvement does the balanced version do.
Anyways, we are currently working on other projects that should result in interesting products for those who might not be exactly interested in DynaLo. I will be able to post a bit of extra stuff once we have some concrete results.