The remaster has a mix of custom, fan made and un-used content from the game.
Tbh, except new gameplay features, no additional content can really be added at this point.
As I was saying before, it's quite difficult bc the game is outdated
(a Renpy 8 port would help) and the code is really not flexible, it has accumulated so many harcoded things and was never really designed to accomodate easy content addition to the point that it's really slowing any update process exponentially as you're forcing stuff in.
That's why I've "only" done a Remaster, just to keep it alive and playable with "modern" standards a game that I really liked many years ago
But a proper "continuation" doesn't make any sense to me, even with a really high skilled team, it's a time wasting blackhole.
I suggested keeping parts of the concept
(Dungeon crawling but haremized kinda game) and make a entire new game with a more robust and tailored codebase and completly new assets
(2D or DAZ).
This could totally work and as it's both genra I like, I have a similar plan for a future game.