Make a lot of games for it, to be honest and launch with a Bloodborne remake or sequel and make Astro a live service game somehow, like the way GT7 is. Sony should just treat the PS6 as a mix between what they did on PS4 and PS5.

Support titles stronger with legs like they do with GT7 and term into an expanding title. And don't force studios into places they are uncomfortable in, most PS studios aren't good at making MP live service games. If they want to ride the wave they should seek partnerships with studios who have a good vision for live service and the capability to make it happen.

a constant flow of games and backward compatibility with previous consoles, the ability to play PS3 games without using the cloud

We already kind of know what they're doing, both a portable and a relatively affordable (probably 500-600 USD) home console. Which does seem a sensible approach, all things considered.

Release games. I don't care how powerful it is or if it has some new fancy ray tracing type thing. Release more than 1 first party game per year.

They need to be super focused on bang-4-buck prospect, and not shoot for the moon.
We need a cheap next gen console in the 400-500$ range.

If that means it doesn't gain much power compared to a base PS5,... then so be it.
I think Sony should aim low, and instead go cheap and massive in sales numbers.

Like would anyone be upset at say a PS6 that's like a PS5pro, at say 400-500$ ?
Sure people that already own a PS5pro, would have little to no reason to upgrade all gen, maybe that is the strategy ?

I don't want to see prices balloon out of control.

I want 1st party to stop focusing on games as a services.
Large focus on just releasing single player experiences that are great.

-Optical 4K Drive (with CD compatibility) even if it's an optional add-on not available with the console itself.
-PS4 and PS5 backwards compatibility, with some selections of physical backwards compatibility for PS1 and PS2 and digital and physical for some PS3 games.
-Little to no live-service games with more first-party games that are not the stereotypical Sony title.
-$600 or under.
-2TB SSD
-DualSense 2 with a better battery, less drift, and a bit more ergonomic of a shape.
-More cracking down on asset flips and shovelware (but they should start doing that before PS6).

Microsoft said they were going to do this. But, gamers didn't like it, so they backed off, at least for a bit. I do think that's the direction that both Sony and Microsoft are heading though. I just don't think the transition will be complete until well after the launch of PS6. 

Gamers are stupid we've been know. Console generations are shit. I'd understand the issue for developers since it means much more money spent with testing and optimizing for different iterations of the same console, but for consumers this is the best approach

Well unless you're of one of the guys with strong FOMO who needs to upgrade their GPU every year 

Gamers are stupid we've been know. Console generations are shit. I'd understand the issue for developers since it means much more money spent with testing and optimizing for different iterations of the same console, but for consumers this is the best approach

Well unless you're of one of the guys with strong FOMO who needs to upgrade their GPU every year 

I dunno... I don't think Sony will move into such a frequent hardware revision release, but I think with PSSR, the new low state mode for PS5 and their MAU having a decent share on PS4 still, that they will look to expand the lifecycle of their hardware while still releasing newer hardware.

So I guess, a half-way point to what you're suggesting. At this point, PS5 could remain quite a viable option into 2030, and I think that is perfectly fine.