I don't think so, unless you're predisposed to take it that way. I've heard the expression used as standing for the disciples waiting at Jerusalem for about as long as I can remember, so I never thought anything about it. I will keep in mind in the future that it may be confusing to those who are not used to it.'120' w/the definite article 'the' kinda forces one to take it literally, don't you think?
I don't get your intended point here. They don't have to be named to be counted (or to be there). That in verse 13 is the eleven you mention above, to which are added in verse 14 one who is named there (Mary) and a few who are named elsewhere in the Bible (Matthew 13:55) -- "These all continued with one accord in prayer and supplication, with the women, and Mary the mother of Jesus, and with his brethren." Then in verse 15 a parenthetical statement gives an approximation of the number of disciples Peter stood up in the midst of -- "And in those days Peter stood up in the midst of the disciples, and said, (the number of names together were about an hundred and twenty,)."Actually 'the multitude of about a hundred and twenty' weren't named, but those abiding in the house that the Spirit filled were named:
13 And when they were come in, they went up into the upper chamber, where they were abiding; both Peter and John and James and Andrew, Philip and Thomas, Bartholomew and Matthew, James the son of Alphaeus, and Simon the Zealot, and Judas the son of James. Acts 1