The mega menu is not yet available for my tenant and am wondering how it will show subsites - how that will look. I have a dilemma right now as to whether create an entirely new site that I will associate with the hub site, or create a subsite under an existing site associated with this hub site. I am considering a subsite because I want to use lookup columns to reference lists within the site collection. If I create an entirely new site I won't be able to do that. However, there has been some debate as to whether to create separate sites and associate with a hub or create a subsite. In this case I think I need a subsite, but I just don't know how that will play out navigation wise. I'd ideally like it to be an entirely different site because I think the topic of the site warrants it, but I'd lose that list association. We are only using one hub site at this time and in the foreseeable future.