Please check out how Dave has handled the transition issues. Read especially the thread where members have reacted.Dani, the more I looked the less I was able to find either of these things. I have to agree with John.
I like the layout of Nature.net a whole lot better than Dave's. But I have always thought that Nature.net could have been better if it had adopted some of the Mudcat's formats.
I guess we have been spoiled by the simplicity and the freedom of the Mudcat.