Golden abyss is the only uncharted I've beaten. I loved it. The gyro controls made shooting feel so good.
Weirdly, Square-Enix actually supported it more with time! I guess for them it just happened to line up with the games their devs were making (plus Kawazu really liked the Vita, so an exclusive SaGa got made).
Pretty quickly, Capcom and Level 5 also dumped it fast. I think the 3DS price drop and MH deal was kind of the death knell for most major 3rd party support, although Bandai Namco snd Koei Tecmo both still stuck around and also SE to much a lesser degree. In the west it never really had much major support outside the deals that Sony financed directly (COD, AssCreed, Borderlands), but 3DS was sort of in the same boat there. Major western 3rd parties bought wholesale into the death of handhelds narrative, it's only now with Switch that's really turned around somewhat and with some surprising publishers leading the way: Bethesda, Blizzard, 2K, CDPR and, uh, Microsoft.
One could argue that the yakuza stuff turned into the free apps they released in japan to tie in with Yakuza ishin & 0. Shame they never did a full game or even a port of Ishin to vita. The free app was pretty impressive.
