the fill plug in the pumpkin isn't too hard to deal with, actually the easiest way to fill the thing is to remove the fill plug and the RABS sensor on the top then pour in the oil through that hole and stop adding when it comes out the fill hole...
for draining, if you really want to make it drain easy, take the cover off and drill a hole from the inside of the diff into one of the bottom bolt holes for the cover, use RTV or thread sealant on the bolt after you are done draining and use that to plug the hole