User blog comment:Jed Revenant man/Suggesting for a possible collaborative idea./@comment-2253300-20130907210249/@comment-1824611-20130908174818

Both good points, to which I say this:

1: who said they'd collaborate, necessarily? It's entirely possible that all the various DE, Orks and Chaos factions will turn up and promptly start trying to bet the living snot out of one another (would be a little chaotic, excuse the pun, but fun as hell to read). In any case, Chaos has an answer for that one, since multiple Chaos Warbands tend to join up and serve under a more powerful master, which might be what the collaborative antagonist faction ends up being. Even if that were not the case, it's more fun when armies are kicking the living snot out of one another.

2: Yu raise a good point about a "foot slog to the item's location" that's easily circumvented: it's entirely possible, for example, that no one knows where the MacGuffin is, for one thing, necessitating a search (there might be a location, there might not, we haven't decided yet). Also, if certain factions aren't part of the main push - or have their own objectives - that leads to side stories. Like if (for example) the big bad collaborative antagonist were a really powerful Daemon calling out for forces to capture the MacGuffin, and my Daemon Prince Halor showed up (being as he is always up for screwing over the Imperium and winning some glory) and then The Revenants showed up. He'd probably drop the main objective and want to go tear them apart limb from blood-soaked limb, damn the relic. Equally, other rivalries might come into play. That's the beauty of it.

You make valid points, and I'm sure if everyone keeps writing at their best and considering these points and any others that are raised, the entire thing will turn out well.