Mike was also going to move the tray for the ESC a bit to help center it and presuably predrill holes for the ESCs, etc like on his other tray. That alone is worth it to me. Plus if he has a production size to follow I'm sure making it for my battery wouldn't take much. I just want a tighter tray with more centralization honestly. The stock one just isn't quite right for me. Plus I haven't gotten an RC-Monster box lately...