While one does not expect this liturgy to fully reflect the liturgical programme of Marini and Benedict, it has been surmised here that the tone and flavour of this papal liturgy may be generally more reflective of this.
Here is one surprise. While the seven candlesticks are there, This will be the first papal liturgy we have seen, not only for this visit, but for quite some time, where the altar candlesticks are not actually upon the altar itself.
There are likely a mixture of factors the resulted in this; see the comments for an insiders perspective.
The usual Benedictine arrangement would have been a particularly good witness given all the clergy present, but at very least the altar cross is upon the centre of the altar which still references the matter of liturgical orientation.
The vestments are nothing spectacular, but so be it. We know these were planned by a firm who uses this style more typically. I see no need to dwell on this point.
Very nice to hear the Pope in his address make reference to being pleasant to celebrate "the Holy Sacrifice of the Mass". A teaching moment and a reminding moment. The Mass is a holy sacrifice.
The music that has been presented so far has been quite edifying, including the traditional Greek Kyrie chant being sung. The Gloria is absolutely glorious as well.
(This gives a better view of the altar)
The alleluia sequence was quite dramatic and the gospel chanted in traditional tones as would be done in Latin as well.
The Sanctus is also from the same Mass setting as the Kyrie.
(The Holy Father meditates after Holy Communion)
(Do note the processional cross)
Overall: A few elements, such as candles upon the altar, would have been very good to see; but overall, kudos to St. Patrick's Cathedral.
