Imeo,
The biggest issues with the current TC mods are calibrating the base resistance of the build you have installed on your mod, second issue is "ambient temperature", that is, what's the temperature around you when you're vaping, and third issue, combine the first two problems and solve them.
From what can be seen on the videos about VIR/Proteus and the available documentation, VIR is good at solving these problems.
However, the proof of the pudding is in eating it. And your competitors gave us geeky-nerdy vapors enough pudding to taste it, and though none of them was outstanding great yet, they weren't exceptionally bad either. They are actually quite good if you know how to use them correctly, even the DNA40.
So I strongly disagree with you about current TC mods "just work and make smoke", indeed I feel very insulted by this remark, as I can certainly distinguish between a good vape and a harsh, burned, or even dry-hit vape. And rest assured, I wouldn't be using those "inferior" TC mods if they gave me any of these regularly!
Just because you can't handle them correctly (after testing them for how long, an hour?) doesn't mean they are not working. Those other manufacturers at least gave us something we can experiment with, learn from it, use it on a daily basis, and gather experience with. This is something that can't be told about VIR/Proteus, as you have to admit.
So, proof to us that your pudding is better than the others (by selling it finally), and until then, please be more polite with other TC mod's users as you might hit your own customers.
BR,
-lars.