Hi. Thank you for the feedback.
Actually you can change your vote. Simply click in the left corner of your previous vote and it will be set back.
Regarding the entry point for all discussions: Our top navigation stays on the page while you scroll down the content. Regardless on which page you are, you can simply click on the button discussions between the Sunrise Logo and the News button. This way, you’ll always reach the old frontpage.
I hope this solves your issue.