I said already that I want the content. What is so hard to understand? I have plausible reasons to work with Tala, Roulette and other villains together, plausible reasons to build later the MB, plausible reasons for the events. Plausible reasons to lvl-up characters and locations, and get better heroines. But no plausible reason to throw hard-trained into a cell and to have them later on lvl 1 if I want to use them again.
I play games also for story related reasons and not just for content. If I want just content I just watch porn videos. Or in games I would just watch the gallery movies (in some games activeted with a mod).
Ah yes, why would Lex Luthor, a character notorious for being arrogant, narcissistic and egocentric EVER want to personally humilliate his enemies. Also, why would he EVER want to make Super Heroes into his obedient,conscient servants. There is surely no benefit in that, right?
You keep talking "plausible reasons", "story related reasons" and you seem to ignore them entirely either because you don't know enough about the characters or because you didn't think about it very hard.
There is plenty of reasons for Luthor to want to personally "train" those heroines into his willing servants. Those I mentioned are just a couple, and even then, they are very strong and compelling reasons character and lore-wise.
What, did you think Luthor was doing all this for money? He is one of the richest men in the planet. He has essentially infinite money. He doesn't need to run a glorified bordello to get money. Between technology, patents and corporate secrets he can get rich overnight in a completely legal way. And it can be even easier if he does so illegally.