Your hypothesis is not wrong based on what we know. The only thing we have to go on is they were developing CoC and pivoted to CoP. That suggests something wasnt kosher with SiN CoC.
1. The problems with MOM could be attributed to removing the plastic liner
2. The previous complications in COC's could (I feel falsely)be attributed to removing the plastic liner (squeaking/edge wear)
3. The plastic liner is consistent with the designs revealed in the days of OMNI.
So I see why to anyone removing the plastic liner might be a hard sell. But Hanson I believe revealed a suggestion he returned to the drawing board on unique products of something. Honestly, you`d have to find the reference. Really wasn't paying attention here.
I feel the industry in hips is heading toward a direction and that direction looks like it's targeted toward superior designs and COC's seem to be a direction that's unfolding. Evidenced at least in part with the H1.
To me removing the plastic liner then dealing with it, seems to me like a no brainer smart guy move in the development of a SiNi hip.
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