Beta + edits

well, a pair of questions

first off, Id like to know what the best WE for the beta would be, if I can get my paws around one,

and two:

I see a million and two different edits of wintermaul, and decided to try one of my own just for the helluvit
but, it wont let me add a new custom unit, or export the custom units from it

Im assuming the good ol duke is using a map protector of some sort, but its obviouse that theres a way around it. any tips?