Hello Scott and welcome to the forum.
I don't know why DeWALT doesn't have a 36 volt cordless tool to compete with the Milwaukee V28 right angle drill, but I've used that V28 right angle drill and it's a great tool! All the V28 tools I've used definitely have some serious power.
I know this isn't exactly what you're looking for, but I recently seen this video on DeWALT's web site about their DWD460 heavy duty right angle stud and joist drill and thought you might want to check it out. It's not cordless, but it's one heck of a tool that offers bind-up control which is a feature that adjusts the motors torque to a manageable level in the event the bit binds, otherwise the tool could severely twist your arm or smash your hand into a stud, etc. When you posted about the V28 right angle drill, I was thinking how nice it would have been if the V28 right angle drill had this bind up control because it too can be a monster if the bit binds.
Here's the link. Just move your cursor over the DWW460 and click on it to start the video.
http://www.dewalt.com/us/gtp/default.aspIf you're a plumber, have your tried Milwaukee's M12 copper tubing cutter? I don't know how it would hold up for a plumber who needs to cuts lots of tubing day in and day out, but it's been a convenient and helpful tool for us for the residential work we do. We use it for copper, pvc, etc. We also have Milwaukee's M12 hackzall and it's another cool tool that we're very happy with for all kinds of uses.
One thing's for sure and that is we''ll be seeing some pretty cool tools in the not too distant future as more complex electronics are integrated into our tools and as battery technology continues to advance.