Subset? Well there are two types of subset … one which can be classed as compatible and the other is incompatible … From my understanding the mu’tazili aqeedah underlies the basis of Shi’a belief - Although Ahl-us-Sunnah deem this a deviant theology, it cannot be considered that Shi’a are the same as the 'Alawis who evidently worship people. I think it is sensible and reasonable to allow the Shi’a to disassociate themselves from the Alwais - they have this right.
So an incompatible subset I am prepared to believe, but I cannot accept that Alawis somehow represent the Shi’a orthodoxy …