The CA GOP is dead as the dodo in statewide races for the foreseeable future. Faulconer would have been a good candidate 10-15 years ago, and still is compared to their bench, but he's not going anywhere.
And I doubt waiting to 2026 would change much for the better. By then, he'll be out of office for too long to be any news.
A strong run by Faulconer, a socially liberal and climate conscious republican, would help the GOP brand though and potentially help some congress and state legislative candidates.