Yakuza 1 would be a good ending if that was the end of Kiryu's story and Yakuza 2 focused on someone else.

Yakuza 2 would be a good ending if Kiryu died on the exploding rooftop

Yakuza 3 would be a good ending if Kiryu focused on the Orphanage for the rest of his days

Yakuza 4 would be a good ending if Kiryu wasn't in it

Yakuza 5 would be a good ending if Haruka didn't dox herself for zero reason

Yakuza 6 shouldn't exist

Yakuza 7 would be a good ending if 6 wasn't half assed

Yakuza 8 would be a good ending if Kiryu's importance as a character ended in 1.