Probably, but I can't think of one off the top of my head.<br/><br/>I don't think the high-CR policy is strictly necessary (although since we have a lot of actions to recruit with and a lot of empty space, it's a good plan to start with).  We just can't have creatures large enough that their size exceeds their usefulness.  Medium CR 1 creatures are probably useless, but Small CR 1 creatures are fine if they have some attack form with a chance of affecting enemies.  (It's not entirely clear from the item description whether alchemist's arrows require normal or touch attacks, but if the latter, kobold snipers armed with them could at least rack up some damage.)<br/><br/>Too bad we probably can't rig up an antimagic room.  I'd love to have one populated by trolls, or other creatures that aren't magical but are an utter bitch to put down without magic.<br/><br/>(Also, is it just my imagination or are will-o'-wisps really useful?)