It makes me cringe casting a game like that, and seeing the glaring holes in my play! It's extremely helpful, though, since I don't really analyze what I'm seeing when I'm just watching one of my replays.
Anywho, I reckon I should probably figure out how to play with banelings anyway, since they're so useful in ZvZ and ZvT, and if the gateway training times change and proxy 2-gates become more prevalent, banelings would likely help then too.
...though roaches feel better for me because, for better or for worse, I love massing queens.