The Producer of Yakuza Daisuke Sato recently went to Taiwan to attend the commemoration event for the release of the Chinese version of Yakuza 5 HD, and he had been asked some questions by some game media.
And here is the answer about Kenzan Kiwami:
Q: Is there any plan for continuing releasing fully remake "Kiwami" version of the game?
A: Personally, "Kenzan" is suitable for the "Kiwami" version, since it's the first Yakuza spin-off game on PS3, and released only in Japan, many Western players wish to play the English version of the game and Asian players wish to play the Chinese version, also because it's an early PS3 game, if there's only an HD remaster it would seems to be like missing something, so I think it would be better to release the "Kiwami" version.
And here are some other questions you may be interested in:
Q: As of now, Yakuza 1-6 are released on PS4 (seems they forgot about 0) plus the 15th anniversary next year, is there any plan for the ultimate collector edition of Kazuma Kiryu's saga?
A: No plan for now, but we would like to hear from people, if that's what they want, we will consider it discreetly. Come to think of it, it's like the 10th anniversary was yesterday, and the 15th anniversary is coming very soon, time flies fast. However, because there is a new Yakuza game in producing, we don't have much time to plan to look back the Kazuma Kiryu's saga.
Q: Since re-licensing is troublesome, will you consider making games that are no need to worry about it like "Kenzan"?
A: "Kenzan" is an early game, so the character performance is a bit outdated, if "Kiwami" version is a thing, we may still need to find new collaborators for the character model.
Q: PS4 is selling more than PS3, is that boosting the growth in the Western market?
A: Yakuza series starts Chinese localization in the Asian market since 0, we're working very hard for this. The Western market is a bit later than the Asian market, but still doing very well, we will work harder in the Western market from now on.
It's not easy for me to translate the full article, there are some questions about the game-making, you can view it here (in Chinese):
https://gnn.gamer.com.tw/8/181588.html