Honestly I think it's best for the dev just to have tried to have people refunded and abandon the project altogether. As now he is moving to visual novels and making it a non(less of a) hentai game, which made MGI so popular. (it's was THE gateway game).
In some ways the game is abandoned, as the new view for it is.. well stupid. (this is one of those time where you can say the dev screw up). (fyi: even in AAA games we see thing. The idea of the players saying you gone messed up and things being changed is nothing new.. even for free AAA games)
-If you're not comfortable with making the style of game anymore cool and all good, but you can't just take the money you earned and decide "screw you", I'm doing this now. /it is highly unmoral ethic.
Edit: 1. Forgot to add this as its important: I'm not saying they're uncomfortable or there won't be any boobies. My point is rather this is what people were actually paying for. It's the cost of asking for money and wanting funded. If there wasn't money involve then personally it would be a different story. (above in the fyi part i said this happens even for free aaa titles... there is a huge difference in those titles compare to a project such as mgi)
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The game in its hay day was gonna be an easy 10/10 game. Sad to see what become of it.