Confused101 said:I think a better term would be immersion breaking. Or just plain inconvenient depending on how you look at it.
When I did the Wrathgate quest line, I had no idea it was coming. All of a sudden, I'm watching this awesome cutscene with all this awesome shit happening. Then I come back to the ground burning and Alexstrasza standing at the gate's steps like a boss.
If that experience were replaced with "Cinematic Missing" or whatever it says, the impact of it happening right then and there would have been completely lost. The zone would change and I'd be asking myself why the ground was on fire and why Alexstrasza was there in dragon form. It's about a cohesive experience more than anything else.
That's definitely explained better than I put it. Maybe I was being a bit dramatic with "game breaking", but it still hurts my game playing experience.
A month or two ago my guild that I created with a group of friends just downed the Lich King for the first time ever (none of us had Kingslayer). This was a huge accomplishment for us, and watching the cinematic after killing the king just made the whole experience all the more epic. That entire experience, including the one Confused101 mentioned is severely diminished if I'm instead presented with a "sorry, but since you bought this digitally, you can't watch this" dialog box.