Turns out Mihai proposed extensions in another topic this morning. I’m linking their message here for you @amckeag
The first one is for importation only, the other two have a price, but can reduce polygon count of a model (and you can choose how much they reduce)
first one is free, other two have a price, and trial versions. They apparently have a graphical interface to help you choose how much you want to reduce poly count. first one don’t.