Discount for leaving a review

We’re in the process of doing some work on our company website and trying to get people to leave more reviews… I’ve been contemplating the idea of offering a small discount on the total invoice if someone does leave a review… with making sure to state, leave an HONEST review. Not trying to get phony reviews, but I think it could be a good way to get more for some of those simple 1-time clients who aren’t big spenders.  We have a fair amount of good reviews but I’d always like more.  Other than the accounting nightmare, what’s everyone’s thoughts on this?