ParniValjak
All-Star
I can try and answer that from the FOs perspective. Iggy plays SF, a position of need, Evans doesnt. Iggy is an ELITE defender, Tyreke isnt in that category yet. Iggy is unselfish and knows how to play team basketball. He is an all-star and Olympian, Tyreke isnt. He provide veteran leadership, something this team is severely lacking. Iggy would easily be the most athletic player on last years roster, and second most this year behind McLemore.
My guess those are the reasons they were willing to go that high on Iggy and not on Reke.
But Iggy will be 30 in january and once a player hits 30, they are likely to start declining especially if they rely on their athleticism as Iggy does! As a glorified role player (an all-star type role player) who was never "the man" experiences that more than most. Just look at how rapid a decline Gerald Wallace is on!