Glitches aren’t neccessarily a bad thing, at all. Anybody who’s ever played Tribes(Starsiege, 2, T:AA, T:V, whatever), can testify to it. Tribes had a flaw in the momentum engine. If you kept jumping, while going down hill, you picked up speed. It’s called ‘skiiing’. This, combined with Tribes trademark Jetpacks and hilly terrain, made for a ridiculously complex method of movement in all Tribes games, which ‘seriously’ deepened the gameplay, as to how well one could move. When people started doing it, in Starsiege Tribes, the first one, tons of people cried wolf and yelled at them and got pissed off, etc, for no good reason. It deepened the gameplay.
Standby in H2 definitely doesn’t deepen the gameplay. If you’re host, and you Standby, it’s an automatic win. Period. The other team can’t do anything about it, at all. Secondary Standby can’t be countered, it can only be predicted. In order to stop secondary standby, you have to waste your time searching for the person doing it. Also, both forms of standby violate the X-Box Live Terms of Service, by manipulating their network connection to gain an advantage in online play.
Sword cancelling doesn’t matter in XBL, at ‘all’. It’s next to useless. Ninja Grabbing(Picking things up through walls) deepens the game too. Along with expert weapon grabs(Grabbing the SR through the floor in Ivory, the BR through the floor perch in Collossus, The rockets through the bridge in Burial, the Plasma Pistol through the wall in Creek, etc etc etc), it just deepens the game in general, by providing multiple, known methods of attack, which can all be stopped without dramatically changing the rules of the game.
Dummying is the only questionable glitch. And, Bungie says it’s cheating. So, that ends that story.