I'm glad you've enjoyed it! Yeah, there's still a lot with the story so far that hasn't been answered, like who was Cecilia's spear, etc. Most of it will be answered in act 3.
As for consequences with the harem, it'll depend on the members. For example, Lily and Violet are rather competitive, so there's some tension, but they both want to stay with you, where as Lily's completely ok with Lenya.
But the main consequences, will be between the two Queens in act 3(I have a few yandere bad endings planned, if the player messes up.)
And no need for financial support, it's it's tight. Just playing the game is more than enough!