However, it is possible that by using the hivemind, Steemians will be so focused on their own community hive, that they would miss great articles in other hive communities.
I couldn't agree more, there will be some disadvantages and challenges that will come with Hivemind, but I think the positive impact outweighs the potential challenges or disadvantages it may present.
Hopefully the flexibility it brings will make it easy to switch gears if it does start having issues.