It all depends on the overall goal, but here are a few more:
Box jumps, drills on the ladder, hill sprints, sprints on sand or grass, squat jumps uphill or on the sand, jumping rope while going uphill or while running, a number of exercises using battling ropes, bear crawls (performed on a hard surface, grass or sand or while going uphill), jumping pushups, pushups while moving (crawling) forward, burpees on the sand or while going uphill. These are a few I can think of and there are many variations to all of the exercises I mentioned as well.
I don’t believe in ONE type of training
I believe we can use all modalities and styles in order to create muscle confusion and consistent results
As with any intelligent workout plan, plyometrics can be integrated with whatever degree of difficulty is warranted for your clients. So , yes, it can be terrible for beginners, if you are expecting full explosion, but how about a mini explosion? and not alot of it!
As with all forms and techniques, we must remain professional and smart before implementation.
Know your client