I have been testing the software and will be giving my point of view from a "mining-business" point of view. Tested on Windows 10 x64 LTSB & Pro edition.

I like the higher, and stable, difficulty on the pool. All workers strive to become the same difficulty of 248 (or such).
GUI is very pleasing to the eye, maybe the best one I've seen. I would like to see yet another wattage monitor for all GPUs combined. Like GPU1 120w, GPU2 120w, GPU3 150w, Total GPU wattage 390w. If CPU wattage could be included in a "Total System Wattage" monitoring that would also be interesting but not as important.
Stability was a small issue when pushing limits. If one card hangs up the miner looks like it's still working, except the Mh/s goes crazy and reports Gh/s into oblivion. I think most miners would love a software that excludes a faulty GPU from mining, reporting the owner via API, and continues on with the rest of the GPUs until there's time to look into the matter.

Since speed-optimization isn't yet a priority, I'm looking forward to see this project continue to develop.
Looking forward to next release and I will help with another evaluation.