Sure, it's not a huge problem, but it's an annoyance. These would be easy to fix with newer images specific to SE Gaming, like so:
Call it a pet peeve, but it just seems rather silly to have these things when the rest of the site is so professional.
As an update to this, it appears that the various images are not cross-site, since SO-Meta has my updated image, but we don't. (If you think about it, that's pretty odd, since the image is SE Gaming themed, but whatever.)
Additionally, this answer on Meta Stack Overflow claims that the pages are community content and can be edited. While I don't appear to have the privileges to edit them, I'm sure some people do.
I propose we all try to create some new SE Gaming-specific images to replace the old inferior ones. If they are well-received, someone should edit them in. Who's with me?