All are good points. I was very happy to see the D-Backs start an infusion of youth on the pitching staff. Point granted. Hitters, however, are still up there in age and I don't think this organization has been as eager to integrate the youth in that department.
Look at the additions/re-signings this off-season: re-sign Mark Grace 38, Finley 38, McCracken (32) call up Overbay (26), sign Baerga (34), keep Barajas (27), and Moeller 28
Now the subtractions: Durazo (29), Miller (33), Colbrunn (33), Bell (37)
It’s key to look at the ages of the catchers. Although pre-arbitration, they’re both pretty old for 1st year starters. Ditto (somewhat) for Overbay, who is only 3 years younger than Durazo. That’s if you ever considered Durazo the starter in the 1st place. Younger, Yes. Significant youth movement, hardly.
Your point about Finley I don’t think is very good. The D-Backs had three capable replacements in CF (Dellucci, Bautista, McCracken, not to mention the kid Terrero), and I think that rotation could have been as productive as their catcher platoon. It’s called maximizing your payroll, a must for a team that is planning on moving down into the $70 million range. Speaking of which, this team would be very smart to retain just one of their current catchers for next year. Robbie Hammock would be a valuable reserve ( a poor man’s Eli Marrero) and it would give the team much more flexibility and, more importantly, more money.
Regarding Colangelo, I did not see the article, but the information it presented is hardly new. I’ve heard Colangelo say this several times this year, and I hope he’ll follow through. Keep in mind, Colangelo also said the D-Backs would be "changing the plan" this off-season and adding right-handed bat. I did not see either.