Benchmark Excercises

I am learning about benchmark exercises and it seems like a great feature to help workouts, BUT....

The number of benchmark exercises is pretty limited and excludes a fair number of important muscle groups and exercises.  Given the large number of online 1 rep calculators, I think a nice feature would be to "Add a Benchmark Exercise" and allow the user to create whatever they want and link it to the right exercise.  This would get Garmin out of the Benchmark Exercise business and would and put more power back into the hands of the user.

An easier "hack" would be to let the user modify the existing Benchmark Exercises (maybe even the name would be good enough?)  Like I said, I'm learning but maybe you only need to let people modify the title of the Benchmark?

Maybe I am missing something?  If I am, please help me out to figure out how to add more Benchmark Exercises.

Thanks