The people at TheHive have made it very customizable, flexible, and very security-centric, as they understand what a particular incident responder or security team needs and provide it quite well.
TheHive can be improved because if you want to use it in a small or medium company, it will be really good, but for a really huge company like mine was, I believe that at least on the free version, you will have big issues regarding performance because the solution is not built for a huge company like mine was.
