I made an account just to mention that the UI is terrible. Everyone I know agrees, but are too lazy to mention it.
I understand making it match with the UI of modern Windows (though no one wants it), but you don't have to make it look terrible to do so. Matching metro is a automatically a downgrade, one people will reluctantly accept, but you downgraded your look more than any other application I've seen yet. That includes the ones that went from wasting 40% screen space to wasting 80% of it. Not only did your artists do this bad, but the people in charge of of product quality didn't notice?
Make it modern if you want, but please make it look professional and not so unappealing to the eyes. It looks ugly and childish right now.
Kudos to the programmers by the way. The program runs great, though I'll by running it more rarely now so I don't have to see it.