This could be the end for consoles if this is something they play with. The pro's don't outweigh the con's IMHO.
To many variables for developing for more console versions=more money it takes for developers. Means people who buy your PS4 base model are now confused why certain features or certain games look, run or are exclusive to newer model.
I just see it as developers pushing back, but not everyone of them. You don't want to sacrifice your vision of your project developers? Well optimize your engine more. From what I'v been seeing so far issues are with their engines, production pipeline. Look at Unity, and many others that ran like shit. Maybe make games complete, and giant patch free.
This could be the downfall of consoles. CHasing that mobile/pc strat that really works for just those honestly.
God I hope this is only something they are playing around with.