Little chance that it would be published but we could put it in Creative Commons, if someone(s) could undertake this huge task. I can supply all the Finale files.

My ideal arranger would be Jeff Ostrowski because he understands chant so profoundly and has such amazing ideas. I am partial to the low countries style of chant accompaniment, spare, relatively modern tonality.

Is it arrogant of me to want to retain some discretion over what gets published?

We use the antiphons from "By flowing waters" here at the Basilica of Saints Peter and Paul in Maine often. I set the psalm verse to Gelineau tones for the most part though. I would be happy to share the accompaniments to the antiphons that I have come up with if that would be of any use to anyone.

I suggest a kickstarter program for raising funds for Jeff O to do this - and every contributor of X dollars would then get a copy if the money is raised.

I concur that he IS the person to do this for many reasons.

JMO should also do an extended series on Udemy, teaching harmonization techniques.

I really thank you for the kind thought, but this will not be possible, as I currently have more commitments on my schedule than I am able to fill.

God bless!

Here's my bid.
(from: http://www.pford.stjohnsem.edu/ford/by-flowing-waters/docs/lead-sheets/Come My Beloved.pdf)

Is By Flowing Waters available as a download anywhere? For example when using an antiphon to place in a worship aid it would be great to have it as an image file or even PDF. Scanning from the bound book never comes out well and there's isn't always time to re-engrave it.