It’s honestly pretty powerful, you can even import libraries from other users. A good example I’ve found is the board game inserts that user “js500” is uploading on Printables. He has his own library with things like rounded cubes, finger holes and whatnot, then uses that to create inserts for different games. Here’s an example: https://www.printables.com/model/1192543-white-castle-with-matcha-insert-organizer-also-fit
(Make sure to also download the library file included)