Some of the Bits 'n Pieces locations changed slightly when I had to go re-put them all in, but for the most part they're in the same spot. Additionally, I'm quite certain that the correct types are all there.
I suggest you keep notes on where you found what (even if its "a lore item of type 1-3") so that when you do find the last one, you can quickly repeat the process. I'd also advise not relying on the common locations. Lastly, this is most definitely a bottleneck and those will be worse for a while as the initial wave of CoI players progresses through the quest. I can't simply make the CoI quests easier than the SC quests. To be blunt: You'll figure it out or you won't.
I imagine several of you would be done by now if you compared notes and worked together to figure out what spawns where to avoid uncessesary 'oops i destroyed the groundspawn by looting it when i already had one' instances. Several of the CoI quests, actually, are intended to penalize players going it alone. By way of example, if you try to DC yourself all four tarot cards down in CC, the rng will beat the tar out of you; if you bring a group, duplicate drops can be handed to other people, letting everyone finish faster. That kind of thing. It's the "Council of Innovation", not the "Council of Headbutt Everything While Working Alone Because That's How You're Used To Questing", after all :toot: