We do not know if they will go for a completely flat design. The last rumour I read about before this one said that they were going for a balance, as in the mid

We do not know if they will go for a completely flat design. The last rumour I read about before this one said that they were going for a balance, as in the middle-ground you seek. Not quite as flat as Windows Phone but much more so than current iOS. Let us wait a few more weeks instead of criticizing a design we haven't seen.