I notice that when you remove the previews and the previews are before the menu, you receive a black screen. After few seconds the menu appears. I think that is good idea if Dvdfab has a feature like anydvd so when you play the dvd it skip the black screen directly to the menu. Maybe the time that take the menu to come can be shorten.

Agreed. However, If you hit menu on your controller it will automatically jump to menu.

It doesn't always work 100% though which is why I never use it. If you want a 100% working jump straight to the menu use PgcEdit and follow this guide. You can actually blank the ads at the start and clear them out using FixVTS (link in my sig) for better compression later.

Sometimes it works. I guess it matters if you choose to disable PUOs in those specific videos.