Of course those things don't have to be set in stone. As the author mentioned in his article, if games implemented everything it would make for one very complex game. But those items
are some good pointers that can serve as inspiration for fun, tactical gameplay.
Larian is designing this game for 2 main, 2 henchmen and 2 summons.
That's 6 characters right there. Sounds good to me.
All in all, I do agree with you: no overkill. Every possible feature has to be weighed and considered carefully.
