This isn't the final version, but as requested I made a draft of some proposed updates to the main page! Here's some screenshots of the new layout so far. The source code is in my private document and may be released after some community feedback.
Suggestions:
I should put the most followed subjects at the top, all the way down to the bottom.
On the other hand, I'll also have to put up with image dimensions: Rows with Tall images would make the spaces with Long images quite wide. At least it's not a 'promotional' wall of text at the top anymore!
I'll also need to change either the admin colour or the 'gray' boxes, or both, so that the Admin text colour is still readable and has an accessible link. I also realise there's no blue boxes! (Oops)
If there's any other images that you feel are deserving of the main page go to Special:Upload and follow the instructions.
If there's any other subjects that you feel should be brought forward or not needed let me know. Looking forward to your feedback.