The idea of netorare without the element of mind control isn't objectionable to me. However, I feel it would be more effective as a subsequent development in the narrative, rather than a complete replacement. Imagine if, following several mind control sequences, Melvin gains the ability to corrupt characters within the story without resorting to the virus. You are correct that including a gradual progression, akin to the main character's paths with the girls or futanari, would add depth to this latest approach.
The untapped potential of the mind control in the after prom scenes is saddening. Their removal from the narrative due to censorship have a significant shift. Impacting not only the current phase but also the trajectory of future developments involving characters like Meiko, Jessica, Steph, and Daphne who were planned to have scenes under said mind control context. Additionally, inklings of threesomes, such as Melvin's interactions with Emily and Sam in after proms going further.
While netorare is expected to remain a focal point in later updates, its portrayal without the backdrop of mind control, because of Patreon's censorship, is disheartening. It's an integral component of the game that will remain uncharted in the two phases.
I hold onto the optimism that if the developer garners ample support on alternative platforms, they may revisit and expand upon the initially envisioned paths in the future.