But there were plenty of positives to take from the encounter at Rodney Parade as a second-half fightback inspired by man of the match Ieuan Jones was enough to grab a losing bonus point.
And Edwards insists that the foundations are in place for his side to learn and improve from this campaign for seasons to come.
"We are going to strengthen the squad [next season] and the main strengthening is to put a spine of experienced players in there to help some of these young players along," he said.
"There was a tidal wave against us in the first 15 minutes.
"Leinster played very well and then we had a harsh yellow card against us, but the character of some of the young players was outstanding.
"I put pressure on myself every week but the fight is always going to be there."
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