Successful, maybe, but there is no way Asobi was more prestigious than the Ico/SotC group. There's a reason everyone thinks that Japan Studio was closed instead of just having their management shaken up.
Around half a dozen of the main TLG staff left or were fired moving most of them to Gen Design, most of the rest remained in Japan studio and that SotC/TLG staff later worked on other Japan Studio/Team Asobi games like Knack 2, Demon's Souls and the Astro games.
The only reason 'everyone' thinks that Japan Studio was closed is officially debunked FUD forum posts and rumor articles from haters. Even if they published and announced later more games and Sony explained the restructuring multiple times.
There were some SIE departments that were doing duplied job in multiple locations working separatedly uncoordinated and they merged each one of these teams. One of them was the marketing team, which now is a single global team that makes global campaigns with ramifications on each country/region.
Other one is XDEV, their 2nd party publishing and outsourcing handling branch: in the past they had a team inside Liverpool Studio to handle European games, other inside Sony Santa Monica to handle American games and other inside Japan Studio to handle Japanese games. They first branched out first the European one to be a separate office that no longer would need to report to Liverpool Studio, which later focused to work only on developing internal. Then they branched out the American team to focus SMS only on developing internal games and that 2nd party team started to work together with the European XDEV instead of reporting to SMS. And later they branched out the 2nd party team of Japan Studio to become a separate office and become part of that global XDEV team, being them in charge of the 2nd party games developed in Japan and the rest of Asia.
After the restructuring they published Death Stranding Director's Cut plus announced Stellar Blade, DS2, Rise of the Ronin and others plus are growing.
After Astro's Playroom the internal development game is working on a bigger 3D action game plus other small and experimental stuff to showcase the PS hardware and also growing aiming to become over 100 workers soon.