The way it will work on PS4 is actually a downgrade in my mind, damn trying to copy MS on that. I have a 2nd PS3 and any game I DL to it (and primary console) will work on any other profile, PS+ games included. So that's 2 consoles with full game privileges as long as they're on the HDD, no matter who is signed in. The PS4 wording I read is that on 2nd PS4, your profile will need to be logged in to play that PS+/other DL game. The only upside I see to that is if they allow multiple profiles to be logged in at same time (yay MS). Of course, being kicked offline on primary console because secondary signed in, uggh I hope not.
Strictly speaking, this is 3-4 years down the line when there is actually a reason to have a 2nd PS4. I also realize it's not the norm to have a 2nd console, but I keep it at family vacation home. Very handy when combined with cloud saving and tons of PS+ freebies. Keep the convenience please.