Sure the unit has its faults most products do just take a look at the ZNAs I have seen quality control seems to be slipping there.
Seriously the hana cana clones are not great, nice lump of alu almost everything else is junk damn dome fire buttons, cheap battery holder, useless static 510, no good for anyone left handed, a dozen KSD, cloupor and hotcig all buzz on firing, failure rate on the cana boards is running at 30%, the buttons just fall in when the hotglue gets warm. I could go on and on
Junk is my opinion and having modded a couple with keystone battery holder, complete rewire, tapped out to fit a varitube 510, 12mm SS firing button,
leica glass windows, evolv dna 30 board, shapeways dna cradle and usb board holder. I could of saved myself alot of money and bought another IPV2

.
Sure phils review was hard he likes Technics 1210s

high end products that are made for people with money!
After using the IPV2 for a few days i like it more so than the hana cana formfactor.
It was never going to be upgradeable that is for the SX350 and of course there roadmap has the V3 which is 100W and dual 18650/26650/lipo