Out of Franzen's 6 seasons in Detroit, only one season he was a 30 goal scorer. That was the same season Hossa was in Detroit and was a 40 goal scorer.
Your analysis is flawed. You accuse Franzen of being streaky for not always scoring many goals in a season, yet you ignore the fact that he was a grinder until 2008. In any event, I do not mean exactly 30+. 29 goals. 27 goals. That's not bad. It's what you'd expect from a $4m player, though he was actually paid less than $1m in each of two of those seasons. Also, he's rightfully known as one of the best playoff performers of the post-lockout era.
You whine about him when fans of every other team would love to have him. This is typical of fans who can't appreciate what they have.
Oh, and I don't doubt that Holland would pull the trigger in a second on a trade of Ericsson and Hudler for Iginla. But Calgary would not in a million years do that, so your point is null.