I think as with many young players, there's not enough end product in his game at the moment, but he's hardly unique in that respect. The young Cristiano was all feints and stepovers and little end product, he didn't do too badly in the end, and Ben at least looks like he knows how to pass the ball, something Ronaldo never did learn.
I would want us to hold on to him and allow him to develop, but I don't think he's ready to be an LFC first-team player (or even regular bench option) just yet. Another loan next year, ideally at PL level, would make sense, unless he really kicks on in the second half of the season like Harvey did. If he does kick on then he can put himself in the frame for regular minutes under Slot.