Please no. This is one of those lines that I will not cross. I want to be able to buy something for 300-450 and be able to enjoy that for 5-7+ years. I feel upgrading PC parts every year or two is dumb in itself (if said previous parts still work perfectly fine), don't want that crap to infest consoles.
I don't even understand how this would work, consoles are not phones and tablets. By the time a new hardware is ready you might as well start a new cycle.
Please leave this to the PC market.