> そして今もwin10mのアプリ開発は7じゃ無理

ここ見るとビルドして実機配置のデバッグは出来そうだけど無理なの？
もはや個人でWin7機持ってねえから試せねえや

https://msdn.microsoft.com/en-us/library/dn975273.aspx
> these are the restrictions:
> Windows 7: You can't run the app locally (only on a remote Windows 10 device).
> You can't use the emulators or the simulator in Visual Studio either.