Bellinger doesn't project well enough to directly displace anybody. Happ, PCA, Tucker, Suzuki, and Busch all project to be better at their respective positions. That valuation is closer with respect to PCA and Busch, but they're both considerably cheaper and could be important pieces moving forward.
Counsell likes to tinker. So maybe he shuffles Bellinger around and gives everybody an extra day off, and we're all set in event of an injury. But that also keeps Seiya as DH all year -- which he reportedly would be unhappy with. And it keeps us from utilizing our top prospects who are sitting in AAA waiting for their chance to be our 4th OF. (Alcantara and Caissie).
From a roster construction standpoint, I just don't see keeping Bellinger around as a smart move. Now, if trading Michael Busch would get us a cost-controlled young starter... yeah, maybe. Or if PCA nets us Tarik Skubal or something. Okay. In those circumstances, I could see Bellinger sticking around. I just don't see those circumstances as likely enough to warrant much consideration.