The PC Engine CD-ROM² versions of Dragon Slayer: The Legend of Heroes I and II are an interesting preservation case because their voiced scenes and theatrical presentation are part of what made those editions distinctive. A straightforward port could make the games available while still losing some of that period flavor through poor audio handling, scaling, or input latency. Which details would matter most to you in judging whether Edia has produced an archival rerelease rather than merely a playable one?