The top links are better now, just the right size. The black is a bit off-putting though. Have you considered making them the same as the blue banners in terms of font size/weight, but have them in green. I can see what you were going for, in having the black play off the rest of the site’s colour pallette, but personally I think it feels a little too strong.
The images are better than before, but still slightly stretched. One thing that might work which I do on my blogs is to set the .post img to max-width=100%; and leave the height as it is, as it’ll scale down anyway. It may be different for you since you’re using Wordpress (I use Blogger) but worth a shot.
Nested comments are no better than before. If there’s an option to simply remove the indent on them when viewing on mobile that’s all that needs doing, as the background/borders can still separate them fine.