New Redemption Grab Bag now includes an assortment of 500 cards from five (5) different expansion sets. Available at Cactus website.
My reasoning behind the way it's currently set up is that Firefoxes is a more solid block, and Serpent has a higher minimum value if they play around it (since I'll normally pull the animals with 2x2, so they'll know what I'm grabbing). I could see possibly switching them, but why do it for the use of enhancements if I can get a block without enhancements?
I have found this post very useful, but some of the abbreviations and short hand make it very difficult to figure out what you're talking about.