Let's keep in it real here, the ONLY reason they are changing emulators this late into the gen is to patch the gaping exploit in the current (old as piss emulator) that has been in the wild for a year. If this had anything to do with respecting their legacy software or even bolstering their own services, they would've done this NINE YEARS ago when Microsoft stepped up the BC game, let alone FOUR YEARS ago when they launched yet another console. I consider this bare minimum effort at this point, though Trophy support for 6th gen games is a leg up on Microsoft, so good on them for that.
Fun fact: Sony aren't even doing this themselves, they have contracted it out to Implicit Conversions. Now, while one of the OG PS2 emulator guys is with them, they are still beholden to the current BC list and what Sony individually pays them to do, so don't expect anything but MAYBE some missing 1st party games and stuff like some of the Disney catalog that you see over on Xbox. The emulator, in theory, should finally be powerful enough to run games that previously were either incompatible or ran poorly.
Pants on head crazy to me that Sony farmed out hypervisor and PSN account level work to a 3rd party studio of people capable of creating a dozen more exploits with even higher level access, but here we are.
Given that the first news I'm hearing about this emulator is that it's buggy, MARK MY WORDS, Sony will begrudgingly now be forced to either move this back in-house, or IMO a more likely scenario, they are forced to have to acquire Implicit Conversions.
Rant over.