When the church moved the Liturgy from evening to mornings, it was for the sake of the people. That *was* an innovation. If serving the Liturgy in the evening is *now* an innovation, so what ? - if it is done for the sake of the people.
Baseless conjecture. I challenge you to come up with ONE 1rst or 2nd century source that speaks of a Christian community that used to celebrate the eucharistic liturgy
in the evening, but then decided to move the time "for the sake of the people."
Regardless, if we are to base things solely on antiquity and the scriptural witness, we shouldn't forget that no early source records a weekday eucharistic "feast." As far as we know (from extant evidence), the earliest communities only celebrated the liturgy on Sundays. The Didache
, Pliny's Letter to Trajan, Justin Martyr and the reconstructed text of Celsus' "On the True Doctrine" all speak of the assembly on the Lord's Day (the day of the Sun). Pliny and Celsus specifically mention that the assembly took place early in the morning, since this was both the day and the time of the Lord's resurrection.
Of course, Tertullian tells us that some Christians would take the Eucharist home with them, so as to commune on it in between eucharistic gatherings, but this practice fell out of use for obvious reasons. According to Taft (if I remember correctly...do you remember, cleveland?), this was one of the reasons why the Church created the first Vesperal Liturgy, i.e. the Pre-Sanctified Liturgy. Since there could only be ONE eucharistic celebration (and that on the Lord's Day), and since the people still wanted to receive more than once a week, the Church needed to do a liturgy without a consecration. We still think along similar lines during Great Lent, wherein the Divine Liturgy itself is reserved for Saturdays or Sundays.
Anyway, any change in the Typikon is a matter for the Bishops. I'm thankful that those in the Ecumenical Patriarchate have more-or-less resisted weekday Vesperal Liturgies and find it noteable that the most knowledgeable Antiochian hierarch has done the same.