Hello @Freddy_Brignardello,
We do have several members here which have experience in one or more of those you’ve mentioned. I, myself, have an experience in Zentyal, as well as pfSense.
You are not the only one who’s looking for better ways, for better systems. There are a bunch of us here, you can check out the Welcome to NethServer Community post, you’ll get the idea.
Its a great idea/project, you won’t get disappointed. We’ve got good capable community here ready to walk you through any ordeal you are having with your installation.
Great! We need all the help we can get to be better. On any challenges you encounter, we do encourage you to post or report via the support section of the forum, it may be a configuration error, or a bug. In anyways, there will be guys to help you out. As you get comfortable with the system, you can ask to be part of the testing team which is more exciting. 