It seems to be important to show Apple that you use their latest features if you want to get your game featured on the App Store. Why can't we use 3D touch for example on Buildbox games?
You could, you'd just have to add it post-export. 3D touch gestures and features aren't generic enough in the smartphone world for BB to add it. After all, it's only on iPhones, and the newest ones at that. One of the best things about BuildBox is its ability to export to multiple platforms from a single project. If they added 3D touch for example, you'd lose a feature of your game if you then wanted to export it to AppleTV or Android. Your best bet would be to find a way to include it in xCode using the App Delegate files. I understand that's how people add achievements and whatnot.