I would certainly think twice, or more, about the crappie. They have massive spawns and the same hinged jaw as largemouth. And, in my area, they spawn early. Thus, they are a direct competitor for groceries. Keeping a balanced predator/prey relationship could be a problem. And, this stuff is all about balance.
I know of one impoundment that has them and are controlled. It’s about 25 acres and near my place. For some reason, you only catch large crappie so they are being controlled by the bass and bluegills. I believe that the crappie must have been added after the bass and bluegills and are thus controlled at spawning time. But, that’s just subjective on my part.