Many people agree with you... My feelings are different:
1 - The text will probably not be larger in landscape mode based off some photos we have seen in other threads... It seems that you will see the same size text, and just have more words on one line. Also, this doesn't help the landscape keyboard.
ADDITIONAL: The text wouldn't be larger, it would be wider since the phone in Landscape mode is only getting wider, not taller. So if the text proportionally changed with the screen, it would be funny looking wide text. Realistically, you would just see the same text and see more words on each line like I said before.
2 - Yes, but I do not consider it to be a big deal.
3 - LOL. With all the people complaining about the app grid and iOS being boring, this just adds to that. And with folders and other options, this does nothing for me at all. I don't mind the grid, but I don't need another row of icons.
4 - For me, I do not watch videos on my phone very often, and when I do, I have no complaints, they screen is little anyway. So this does nothing for me as well.
In the end, you like it, I don't. However, I am sure I will buy it... or wait to see what comes next year because I do not like Android phones, and I like how all of my products sync together so nicely.