Interesting analysis, but at the end of the day I think there is little demand for:
1. Getting out of bed in Ireland at 200am to reach DUB T2 by 400am to depart at 600am.
2. Being awake for 12 hours by the time you arrive at BOS and having another 12+ hours ahead of you before bedtime. It would make westbound jetlag / sleep cycle problems worse than eastbound ones.
3. An eastbound service that is only really attractive or useful to passengers terminating at DUB, and which gets you into the city after midnight at that. You can't even get to other Irish destinations at that hour unless you drive yourself, and you'd be up all night doing it.