Hey all.
I'm starting a new campaign, my second for Only War (finishing Eleventh Hour this week) and it's my third overall. I wanted to create my own setting, since I don't really like the Spinward Front (none of the worlds they describe fit my vision for the campaign, and I've no idea what's on the others - seriously, what is a Mining World? Not that FFG did a bad job, but that's OT).
So I'm wondering what setting to use. The theme I'm going for is to use several regiments - the prologue is an elite team of Grenadiers infiltrating a Chaos-held defence platform, for instance - and have them each explore different parts of a meta-plot (something to do with Saints 'n' Chaos 'n' stuff). So I'm wondering what to do. I could flesh out my own campaign world, and do something along those lines, but another option I considered is to use Dan Abnett's Sabbat Worlds Crusade setting. I'd go from the early years, and maybe pick up the Ghosts later on if my players want to.
At this stage I'm not sure what to do, so I'm going to ask some more experienced GMs for advice.