Let's compare the sizes of three things: UFC cage, WEC cage, and a professional boxing ring used as a control to compare against the MMA cages.
Here are all three compared, sized to scale:
Here are the three layered on top of each other:
Here is the 750 square feet of the UFC cage if it was square-shaped, compared to a the boxing ring:
And here is the 482 square feet of the WEC cage if it was square-shaped, compared to a boxing ring:
Now, from these accurately-scaled shapes, you can see that the size of the UFC cage is much, much bigger than both the WEC cage and a professional boxing ring.
Would a smaller cage make UFC fights more engaging and more exciting?
It seems like WEC fights were ALWAYS action-packed. Yet those same WEC fighters now fight in the UFC and they aren't nearly as action-packed. What changed?
Could it be the larger cage?
Should the UFC adopt a smaller cage size, like that of the WEC?
Here are shots from a boxing ring and UFC cage overhead: