hi, could you create a 4k skin... I am running @ 300% dpi in 4k and the normal skin looks like windows 95... not a major problem as most of the time it is hidden anyway but I think you could invest some time in this, below link to a screenshot, it might not look too bad but on a 50 inch it looks terrible

http://pasteboard.co/dqqyELL2G.png

Please not change font size in display settings. This function very bad in all Windows. But possible set font size by element (in win10 in Advanced).