They are a pure waste of time that is nothing but an added grind with a price hike with glimmer now. If Bungie wanted to slow progression down and have gamers make "meaningful choices" or whatever they were thinking? they went the wrong way about it. I've been reading through the replies on your thread and so far I haven't seen a legit answer from anyone yet that Bungie has already done with D1, yet there wasn't this waste of time collecting cores in D1.