Indeed, I would imagine that in their lifetimes the saints deemed "equal-to-the-apostles" would have found the title somewhat offensive to their faith! That being said, they are called equal to the apostles because, like the apostles, they spread the Word of God. Thus we are dealing with a title regarding the spreading of the faith, not the content (though one can certainly argue that the saints are part of the content of the faith, which is true, but it is true on perhaps a different level then what we are arguing here). Furthermore, the very fact that the title "equal to the Scriptures" hasn't appeared in 2,000 years, while "equal to the apostles" has, teaches us something as well. The Church has not been too hestitant in giving the first title, for some reason it has been supremely hestitant in granting the second.
The homilies of the Fathers are, I would assume, likely homilies on the Scriptures.
As for the "text of the liturgy itself", it is centered around the Scripture reading and the Eucharist - all the parts of the liturgy lead up to, interpret, and support these two events. Even the Creed is a summation of Scripture, only the famous "homoousious" is not found verbatum in the Scriptures, though it is truly found in spirit.