I 100% agree that we need to bring in someone better than Rooney, and more game-ready than DCL, post-haste. Just think it's worth our while to give DCL in front of Sigurdsson a few months as our primary setup until we can get that settled, with Rooney, Sandro, and Niasse as backup and 4-4-2 options. That's all.
"3 goals from open play" is making a mountain out of a molehill, that shouldn't secure anything for anybody, especially when the rest of a well-rounded player's elements are out of whack.
If DCL continues to struggle and Rooney looks a world beater in his reserve action, you can always make a change. But I think Rooney should have to earn his way back now. And yes, maybe it is somewhat of a matter of lining up with our pre-conceived notions (ie, is Rooney "falling right back on his old, undisciplined Utd habits" or "trying too hard because he loves Everton too much"). Skeptic v. true believer.