I've always liked the Imperium, but being something of a big lore fan I always twitched a little when my Imperial Guard went up against a Spess Mehreen army yet again. I think after nine years they've wiped out about three whole chapters. Poor sods.
With 6th I quite fancied starting a new army. I've occasionally dabbled elsewhere with the odd box of models then go "Meehhh..." and crawled back to my massed Imperial Guard and/or Daemonhunters. The massive resurgence in popularity for the Grey Knights has left a sour taste in my mouth and the odd eye roll when they come out of the box. The fluff OCD in the back of my head really wants to collect something relatively 'rare-ish' so I don't end up fighting fellow Imperials every other game and whilst Daemonhunters satisfied that itch to a fair degree they're now being thrown up against Grey Knights even more.
1) I like shooty armies. It's always been a favourite feeling of mine to get into a nice position and blast the enemy to piecies.
2) Something not Space Marines.
I considered the Sisters of Battle but the general lack of variety and expense of the models put me off. They also pulled a Grey Knights and butchered the Inquisition area. I've been looking towards the Tau, but I'll be awkward and say the whole "In the Gundam of the Far Wapanese" look of them has made me peer at them and back away slowly. I've got a small collection of Dark Eldar from impulse buying but I've heard mixed things about "shooty, not shooty", likewise for the Necrons. I've been out of the game for a fair while thus a bit of catching up is required on my part.
Tah chaps. Apologies for being awkward.