If I remember correctly, today we are quite content to allow the Orthodox to omit the filioque. We don’t make it a dividing point. But many Orthodox will not budge, and insist on severely criticizing those Christians who do incorporate the filioque into the Creed.
Dogmas do develop, while maintaining their essence; so do creeds. St. Gregory Palamas (Orthodox) developed the notion of the energies of God in the 14th century. Why is that development of theology properly allowable and perfectly acceptable, while the filioque is not? One might submit that this is a double standard. Not intended as an attack but an honest observation of a discussion I had with one of the local priests.
Let me know your thoughts.