What if kurita had ignored Taffey 3 and continued to the Leyte invasion beachead?

Yes, the ISE and HYUGA had both sent all of their aircraft of to Formosa on or about 12-14 September, as per the interrogation report of Rear Admiral Chiaki Matsuda(COMCARDIV4), and Captain Koshikazu Ohmae(Chief of Staff to CinC Third Fleet). It also appears that the carriers JUNYO and RYUHO may have also contributed aircraft to Formosa, along with Ozawa's carriers.
Matsuda:
USSBS: Interrogations of Japanese Officials -- 69/345
Ohmae:
USSBS: Interrogations of Japanese Officials -- 36/150