Before you undertake something like this, I'd urge you to take a look at
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. It has a very different story premise, but its UI/presentation and game mechanics are quite similar to Lilith's Throne.
You might be able to contribute to the project. Alternatively, you could just fork the whole repository, chop out the unwanted storyline, and then splice in content for your LT-inspired game.
Pros and cons of BDCC:
+ active developer
+ community input (code, bugfixes, characters, storylines)
+ stable codebase; good performance
+ animated sex scenes
+ sub/disempowered roles can be played (as well as dom roles)
+ if an NPC annoys you then you can enslave and abuse them
- character customization is less extensive than LT
- rudimentary combat
- awkward inventory management
? content focuses heavily on "furry" fetish
? small-scale, low-stakes story