What Skilled really needs is the ability to gain expertise if you already have the proficiency. This makes it less, "I'll pick up a few extra skills that aren't core to my concept." and more, "I'm going to be the best [your skill here] on the planet!"
A +1 wouldn't hurt, either.
I think creating a Feat that does half of what a Rogue gets for free, is rather fair. It would most likely be a Feat a Rogue would never take but I could see other classes doing so. Of course the proponents of "stealing some aspect from another class degrades the class" are not going to like it at all. Of course I am not one of those proponents, I designed a system for DnD 3.0 to 3.5/Pathfinder that basically had 9 generic class types and every class ability was turned into a Feat -- thus you could, as you leveled up, literally build any concept you wanted. It worked beautifully, I had players mapping out a fairly balanced character all the way up to 20th level and still want a few more feats to round out their idea but were ecstatic that they could do as much as they could since the base system did not allow anything nearly as flexible. To me build what you want systems, with logical structure restrictions works a whole lot better than the cookie cutter method that DnD has always used and still does.