[tybris]

I don't see why you would want to change anything as a newcomer. There's no way you are going to understand the process well enough by then. First get to know the people, figure out how they think, how they work and how they communicate. Then figure out what's wrong and start telling them about it. You have nothing important to tell in the first few weeks. Ignoring your criticism is the rational thing to do.

At a lower level the way to get change done is to agree with people on anything you find sufficiently unimportant. On the thing you really want to change you'll explain that it's really quite similar to what they've been doing before, except you start taking into account A, which should be something they can identify with. To be able to do this, you need to know who you're talking to.