Windows 10 still contains a lot of 'tablet friendly' features, but they've been dialled down and most don't get in the way of desktop users. I think they've struck a decent balance here between the needs of desktop, netbook and tablet users, but there is nothing here for smartphone users - converging those size-constrained needs with the rest is surely the trickiest thing to get right.
When looking at creating a convergent OS, I think it's really important we look at earlier attempts, so we don't repeat past mistakes.