Originally Posted by A Time to Screw

Probably implementing an exclusive Nutaku only shop where you can spend money to buy ingame Gold, hyuck

That would be pretty pointless, since gold is easy enough to gather anyway.
There are a lot of possibilities though, even special necklaces which increase or reduce a girls' speed by 100 are technically possible, though as far as I know, not even DMM has such a thing. But Nutaku could easily create it if they really wanted. Whether it'd be within the license to do so is another matter. They do have some freedom to do things differently, for example, the weekend gachas are different. But at the same time, they weren't allowed to make their own brides (or possibly, they were allowed to make their own brides but wanted DMM to make them, and DMM designers refused that, meaning no brides for us because Nutaku didn't want to or couldn't design its own brides. We'll never know exactly what happened there.)