Some crappie, in particular white crappie, may be inefficient at utilizing typical pond prey items. Therefore, they can get stuck at smaller sizes, unappealing to anglers.
Even small crappie can do a major number on baby bluegill, so they may reduce your pond's LMB carrying capacity.
Some people love crappie so much that it doesn't matter that managing crappie may be more labor intensive. That's absolutely OK, of course, but it's important to consider these things before pulling the trigger on a crappie stocking. It can be very hard to turn back.
My personal experience is that black crappie can be a great addition to a pond with proper planning. I think they are a great fish. Unfortunately I have seen ponds where crappie proliferated and the pond needed total renovation.
