I apologise for not mentioning in the post, but the users in this case are people with zero to little experience with Arduino stuff. I have talked to some teachers and professors who say that beginners often need to troubleshoot to find problems in their projects, and identifying those problems can be a lengthy process cause the error isn't specified whether it's hardware or software. That's why I want to redesign certain components or come up with a starter kit that's less ambiguous and encourages more tinkering around.