Firstly, and most foundationally, Praise of God is uppermost. For it is by standing, being uplifted, and growing, in the presence of God which is at the heart of Jesus' prayer. This, secondly, then goes hand in hand with Proclamation. For, happily, in many translations Praise and Proclamation are united together in a single verse: hallowing God's name and praying that the Kingdom may come are one, much as Jesus' linkage of loving God and loving one's neighbour is at the centre of true faith.
The final three 'P's flow out of this essential living in the presence of God through Praise and Proclamation. For, thirdly, we are invited to trust and wait on God's Providence. living by waiting humbly on God's provision. Indeed, as some translations have it, we are simply to pray 'for the bread sufficient for the day', living by faith in the grace of God. Similarly, fourthly, such living in the presence of God, then calls us into Penitence. This, again, is not an unearthly forgiveness, but a real living into and expression of the mercy of God in particular circumstances. For, especially in Luke, who speaks of debts and indebtedness, we are reminded of parables such as that of the man who owes much in debts but then stings others for very little. Hallowing God's name and seeking the Kingdom are again down-to-earth realities, albeit ones which make little sense outside of life in God. Thus, fifthly, and finally, we are encouraged to pray for Protection, as the trials of this world are very real and unbearable without the love and power and of God's grace.
Surely these 5 Ps (Praise, Proclamation, Providence, Penitence, and Protection) are thus the key things about the Lord's Prayer, not the words themselves. After all, if it were the words that were the crucial element, we should really be using Aramaic or at least Greek, like the first followers of Christ. Indeed, for me, the most beautiful times of saying the Lords Prayer have been ecumenical occasions when we have been encouraged to use whatever words, in whatever language, that is most comfortable to us. Doing so is good and listening to others as we do so is even better. For in living that way in the presence of God together, we, and the Lord's Prayer, however it is recited, are signs of the new Pentecost.