Compared to the final scene of Lust Epidemic, featuring Madalyn and Daemalius in conversation and ending with Madalyn marching off to Cape Vedra in search of Nadia, the end of Treasure of Nadia pales in comparison. As Treasure of Nadia progressed and more and more characters were introduced the game became flakier and flakier. You see the same thing happening with long-running TV series which start out well with a small cast of characters, all of whom have enough time devoted to them to develop their characters and allow you to get to know them, which nosedives as soon as original characters are either rotated into the background or leave and less interesting characters get promoted or introduced, slowly watering down the drama until it becomes too dilute to remain invested and interested in and the series slowly dies.
This happens all the time and is THE major reason why people stop watching and series get cancelled.
(In ToN for example Diana, a really great character, went missing for months at a time unnecessarily and the Sofia/Madalyn dynamic was not properly explored considering that weird frenemy relationship was the engine driving much of the most interesting drama in Treasure of Nadia.)
Lust Epidemic had six female characters compared to Treasure of Nadia's dozen and was, in my view, much better overall as far as plot, story, drama, suspense, dialogue and characterization are concerned. Treasure of Nadia was a step-up graphically but kind of hollow at its core compared to its predecessor IMHO. The Genesis Order looks set to be wonderful graphically but if it doesn't improve on Treasure of Nadia storywise it will neither push the envelope or raise the bar of the lewd game higher, which would be a crying shame considering the talent NLT Media obviously have at their disposal.