I also think that Kel-tec's ejection system would be problematic at best. Why not just kick it out the side and be done with it. They only did it so that it could be used ambidextriously, but I think the trade off is really not worth it.
To the topic at hand though, I too believe that FA is at most, a really cool option to have. I've spent the vast majority of my adult life teaching weapons for the AF, and will be the first to admit that it's a hoot to rip off a full mag on A for AWFUL! However, I've also spent just as many years trying to get the point through to the troops, that FA is really only good for keeping heads down. If your intent is to hit a target, you've got to use your sights, basic shooting fundamentals, and the SEMI-AUTO setting.
I've sent millions of rounds down range in FA during my 27 year career, and I can tell you that even at 25 yds, the vast majority of shooters can not put all 3 rounds of a 3 round burt completly on target. Even in combat, FA is a good way to make a lot of noise, have some fun, punch a lot of holes in the air and let everyone know exactly where you are, right about the time you run completely out of ammo. Not smart.
That being said, as I feel as a weapons instructor is my job to say, I do have to agree that it is our right to be able to own such weapons, regardless how useless they might be, in a real world situation.
I do not agree that we have a right to own what ever the government owns. I don't think I'd like the thought of my nieghbor owning a live nuke. That kind of thing could affect my safety as well as his own, as well as the greater Denver metro area. I don't believe that that any civilian has the right to own a fully functional A-10 with it's 30mm rotary cannon that can take out heavy armor at more than 2 miles slant range.
Unlike the government, individual civilians make up their own minds what to do, and have little to no oversite. In the military, you can't just go hop in the cockpit of an F-16 and make up your own mission, I don't care what you saw in the movies or read in some dime store novel. Nothing is done with military hardware that has not been approved by others. Even the President who "Has his finger on THE BUTTON" is not the one who actually pushes it. All he does, is order the button to be pushed by others who are hundreds of miles away. That is oversite.
I for one, would not want anyone without oversite, to possess that kind of firepower. There needs to be limits for the safety and security of us all.
As for the high price, I don't mind that too much, it does keep it from being an impulse purchase, but then most of the organized crime groupes have that kind of money so it's really not much of a deterrance.