I prefer the college OT to the NFL's, but one thing I don't like about it is how much it overvalues kickers because teams start in FG range right off the bat.
I would prefer a system similar to college but where the starting position changes based on the OT period.
1st OT: Start at midfield
2nd: Start at the 35
3rd: Start at the 25 and have to go for two with TDs
4th: Start at the 15, must go for two with TDs, no field goals allowed
5th and on: Start at the 10, must go for two with TDs, no field goals allowed
I think an OT system like this with tiered starting positions would be an improvement for both NFL and college from their current systems.