I hope I don't open a can of worms by saying this, but:
From the hard-product perspective, yes, United seems to be valuing its "Premium seats"; such as J, PE, E+. As a young flyer, I can't tell you how much this entices me to stay. A better seat, no matter what cabin I'm in (as long as it's not E-).
However, you will get those who say United needs to value its soft-product as well and that it would do well to improve this. Basically, the argument of quality not quantity.