Sal, the Stretch is what I consider "my favorite folder" and I echo that sentiment on the boards all the time- so obviously I love it as is but I'm not up tight about seeing it CQI'd. A deeper finger choil wouldn't hurt it and plenty of feedback in the past has suggested this. Same goes for the straight spine, hey why not...
Only one way to find out for sure, how about a run?
. What I love about the blade is the very thin grind, the added strength at the tip of the Stretch is nice but I understand that a straighter spine will win more fans over as aesthetics seems to be the only thing some folks take issue with.
Call it The Stretch 3?