I've been trying for years to convince my team to solder the wires or use heatshrink or both, since our connections kept coming loose, but, while we were talking to some people at a conference, someone gave us a few of these:
https://www.wagobox.com/shop/wago-22...412-20pcs.html
We were a little skeptical, but we tried replacing some of our connections with them, and they worked perfectly. If you're not careful, they can pinch your fingers, but they're easy to use, they don't come loose, and they're reusable. We bought a box of them and used them on our robot, and I haven't brought up soldering or heatshrink to my team since then.
If you must crimp, though, make sure the people know how to do it properly. Too many of our connections have come loose because someone didn't crimp the right way.