I finally found where I found Vagaggini's proposed secondary Eucharistic prayer, which after editing became our Eucharistic prayer III. I was talking to one of the brothers about it a while ago, but could'nt find it. If he still wants to see it, Here It Is. You can see the obvious parallels to the Roman canon. If only rather than having 20 something eucharistic prayers and leaving it up to the priest to decide what he wants to use, they could've left the Roman canon unaltered and added the proposed prayer as an alternative on weekdays.
Maybe some day all this tinkering around can be fixed.