You can change how you do church, you can change the time you meet, you can wear blue jeans instead of suites, you can have two services instead of one. There is a lot of things you can do to change rituals, like believing one has to be baptised to be saved.
These are not rituals -- look at Christ's baptism.
This is an excellent example of people removing what has always been believed -- it ends up in Gene Robinson
To deny baptism is to deny Mk 16:15-16
| 15And he said unto them, Go ye into all the world, and preach the gospel to every creature. 16He that believeth and is baptized shall be saved; but he that believeth not shall be damned. |
Acts 16:31-33
| 31And they said, Believe on the Lord Jesus Christ, and thou shalt be saved, and thy house. 32And they spake unto him the word of the Lord, and to all that were in his house. 33And he took them the same hour of the night, and washed their stripes; and was baptized, he and all his, straightway. |
Titus 3:5;
| 5 he saved us, not because of righteous things we had done, but because of his mercy. He saved us through the washing of rebirth and renewal by the Holy Spirit, |
Rom. 6:1–4;
| 1 What shall we say, then? Shall we go on sinning so that grace may increase? 2 By no means! We are those who have died to sin; how can we live in it any longer? 3 Or don’t you know that all of us who were baptized into Christ Jesus were baptized into his death? 4 We were therefore buried with him through baptism into death in order that, just as Christ was raised from the dead through the glory of the Father, we too may live a new life. |
Gal. 3:26–27;
| 26 So in Christ Jesus you are all children of God through faith, 27 for all of you who were baptized into Christ have clothed yourselves with Christ |
| to make her holy, cleansing[a] her by the washing with water through the word, |
That is hardly "changing how one does church"
Church is the Divine Liturgy, the celebration of the birth, life, teachings, sacrifice and resurrection of Our Lord Jesus Christ.