These never affect core specs like GPU/CPU/RAM to where different consoles have different specs. It's a bit late to have cross game chat for PS3 as people would have to buy a new PS3 for it. And likely the people they want to cross game chat with... don't have the new PS3. 

I agree in general, when the upgrades affects the specs. But 802.11ac can be easily introduced. it won't change anything for people owning the older consoles. Even the SATA III could have its place. It would allow people to get full benefits replacing the HDD with an SSD or an hybrid. But adding RAM or else is a no go road.

New 3DS

And there are still people who buy PS3s, and I would retire my PS3 away from the living room if I could have one with cross chat. And besides that, more RAM would help with more than cross chat, it would also help with games. 

Nintendo wanted to prolong the New 3DS cycle. The sales were declining, and they had to do something. On the other hands, Sony wishes people would move from PS3 to PS4. So this wouldn't make business sense.   

I'm aware of the circumstances, only citing an occasion in which a console did indeed receive a power boost. 

Handhelds and home consoles are different. But even then the new 3DS's hardware boost isn't something I would go along with if I was on the board at Nintendo.

Problem is there's only a few people that would re-buy a new PS3 for crossgame chat, which doesn't mean all their friends would. It would've been better to have done a year before the PS4 launched.

I would limit production on the remasters and focus on newer games that could only be possible on ps4

PlayStation Home for PS4.

Wait! Wait! Hear me out!!
It's not Home like before. This time, it's just Miiverse combined with Twitch. Maybe have a link to Facebook so we can stalk each other. None of that other Second Life bullshit. It would work!

So you want them to skip God Of War IV? :O