Not really… Every Celebration of the Mass at that time was ad orientem. Everyone faced east, to the extent that in some places, the altar was behind the People and the People faced away from the Altar. The Mass would resemble the Tridentine Mass much more than the Novus Ordo Mass, which was more or less created on the spot rather than developed through the ages.
The very Early Missals, and even the Celtic Missals began Mass with the Deacon chanting the Litany of Saints. And the vesting would take place on the Sanctuary. (This would have been a bit later than 100 AD)
The Prayers at the Foot of the Altar were there from the beginning - Just because it doesn’t say it in the Didache doesn’t mean it isn’t true. There is historical proof that St. Paul used such a practice also. The Psalm that is recited at the foot of the altar (Psalm 42) is the same one that the Jewish Priests would recite before entering the sanctuary.
The Glory to God would have been more or less the same. This prayer is ancient and essentially unchanged.
There is also historical evidence that multiple collects were recited rather than simply one. More still, there was only one epistle and one gospel reading.
The Offertory Prayers were completely different from the Novus Ordo Mass, that I can guarantee. The offertory prayers in the current Novus Ordo Missae actually originated from the Anglican BCP. However the Tridentine Offertory prayers are a bit more in touch with the Didache.
The Canon would essentially have been the same, considering that most Provinces of the Church maintain a similar consecration prayer (until the introduction of the other Eucharistic Prayers).
The Ablutions after Communion (Purifications) would have been done with wine rather than water, similar to the Tridentine Mass again, this is a custom that the Jews held for the ablutions also.
The “Ite, Missa est” (Go, the Mass has ended or Go, it is sent.) would surely have been there. This is where the word “Mass” comes from.
I would have been interesting, yes, but the definite lack of seating would have been slightly unsatisfactory for me. There was no kneelers or seats. On Sundays and Feasts, the witnesses (they were referred to as witnesses of the sacrifice) would stand during the Consecration, whereas on other days, one would kneel on the ground - Sounds Fun!
Deus, Salus Nostra :gopray2: