Hi Pike,
I think you have good arguments there. Fortunately, not every user needs all the Outlook functionalities, so I think there are plenty of opportunities to introduce NethServer where MS Outlook is not needed, especially if you will use Webtop in a web browser. And in addition, you also have the Webtop integration with Netxcloud, which is an excellent function. However, I believe that if Outlook were fully supported by NethServer, NethServer would be the absolute alternative to MS Windows and MS Exchange for Small Business and not to forget Office365.