Chris (critter), you should really reconsider. I know absolutely nothing about the DLC. I have done no TA (except like the first week on a select few like brimstone plugger) on any of the levels, and I'm still doing this. I will take it with a grain of salt and just have some fun with it, and compete extra hard on the original 16.
I'll probably join if I can be around. I'd suggest doing them all in reverse order to get the DLC out of the way first. Don't want to end on something lame like Edge Volcanic
I'll reveal it soon but it starts with razorback and ends with beachcomber