[mannykannot]

> Requesting permissions for everything your app can possibly do at install time makes apps look scary.

There's another point in favor of requiring it. The only downside I can see is that the people who most need to be scared by it would not be.

[cesarb]

There's another downside: optional functionality. For instance, Firefox can use the camera, but if I never access a website which needs to use the camera, there's no need to allow Firefox to access the camera. Many Android apps have optional functionality which would require extra permissions, but if you never use these optional functions, the apps work just fine without the extra permissions.