Ever heard that the enemy of the great life is a good life?

I'm not too sure the basic is the problem. It could be if it is too high, but whether it's basic + comm or pure comm, the business decides what numbers work for them from their point of view and hire and fire accordingly.

A sales rep will take their foot off the pedal when they're not hungry anymore. So if they're happy with what they've got you've got to make them hungry again.

I'm not a fan of changing the reward structure downward by raising targets for the same reward - that is punishing results. Far rather make the rep hungry to achieve even more. A ride in a car they can't afford yet, a travel brochure to somewhere they really want to go, the sales numbers needed to make it happen and a positive expectation that it is achievable.