Dave -
The problem you describe -the location of the ejection port- is a problem, but it doesn't necessarily have to be inherent to the bullpup design; look at the FN P90 for example. Its just a problem that needed to be addressed in subsequent redisigns of the firearm. Heck, even a small brass catcher will solve the problem of the right ejection port pretty neatly. The problem the bullpup was designed to solve was that of getting a full size 18-20" barrel in a package where the full length of the barrel wasn't hanging out in front of the shooter. The point I was trying to make was that in comparison to something like an M16A2 or HK33 where all the barrel is hanging out in front, the AUG, or any bullpup design with the same barrel length in a shorter OAL package, is going to be easier to manuver and handle in tight quarters. Additionally, with something like the M16 or HK, the barrel is going to break the corner, whether its a left or right corner, long before you do and tip off any hostiles as to your position. Certainly you can back off your(safe) side of the corner a bit (cutting the corner much wider than you'd have to do with a bullpup), but you'd quite possibly be exposing yourself to a shooter with a little bit of an angle on you as you backed off the corner and cut it wide.