I still play '14. I had an Irish (running the Air Raid) and a Hawaii Dynasty (made June Jones and running a custom R&S PB) going last year for awhile. Might have to either dive back in, or download some new rosters and start a new one. Here pretty soon.
They finally made the TO viable, and went a tad overboard. Like you said, it's a force if you know what you're doing, and a bit cheap because of the ability to pitch so late. The fact that they finally made the Midline actually work right is the key for human players being able to run it. The CPU on Heisman will absolutely THRASH you if you're not vigilant, though that's just how the they are on offense. Their execution is bananas. I made a Run & Shoot playbook that includes some Flex, and it's so fun.

Them were good times.