1. It just seems wrong to have Darth Vader jumping around like Chow Yun-Fat, even if only on one page. It's like Jason Voorhees stabbing someone through the heart, then taking off his mask to say "I think he got the point" and winking at the audience.
2. God, I hate that since the prequels, everyone's conception of Vader is of this blubbering emo crybaby who's full of tragedy and brooding. "But... that's not true..." Doy! If I were Palpatine, I'd dig up Padme just to slap him around with her until he manned up. I mean, God, you're a Dark Lord of the Sith!
3. The Jedi really, really, really need to plan out what they're going to do with their vanquished enemies before they take them on, not have a discussion over the guy's bleeding body. That must be how the Sith got started. Someone said "Why don't we just kill the fuckers?" and everyone who agreed with him went and made their lightsabers red.