Shadowkeep is the embodiment of mediocre. Most if not all of the content is now irrelevant unless you want a few okay legendary weapons and armor for armor synthesis. However, there are some decent exotics that are worth using. Shadowkeep's campaign is mediocre at best and comes to a screeching halt when you are required to complete a set of armor by doing busy work. The dungeon is okay and I personally have not done the raid but community reception is pretty mixed on it. I wouldn't bother with this expansion unless you really want to have access everything that Destiny 2 has to offer.