The strategy on the part of NHRA was to increase attendance, viewership, and excitement until seasons end by keeping the points race close. By having the countdown and bonus points in the final it does tend to keep points counts much closer. That's a win for NHRA. For the teams, they tend to try to save their best for last. They may choose to do more testing in the regular season when they are comfortable in the points knowing they are getting in the countdown. In TF and FC they will keep back clutch discs they know are good for the CD races and I'm sure the PS and PSB guys keep back their best stuff as well. So the CD does change the way they race. If I know the last six races is where I can makeup the most ground I would do the same thing. If you're on a tight budget it means more to you to do that and if you are a Top 5 team you may not want to give away any performance advantage you may have in new parts. It's a pretty small world in that level of competition so if I have something I know will make me faster and I'm comfortable in the points I'll save it for when I really need it before the other guys see and catch up.