If an utter hacker's opinion helps at all, I added the third wedge and dropped the 2 iron to have another option on shorter shots. I can pull out the 60 degree lob wedge and hit a shot full on instead of having to try to swing one of my other, longer wedges a certain amount softer. Being as new as I am, it made sense to me when I read information suggesting that often a third wedge was more useful than another long club (iron, wood, or hybrid).
I can't say that I am any great shakes with any club (being about 90 days into playing golf or so) but that is my .02 on the topic.
Y'all take care!
Jack Lee