You're probably too young to remember the funding issues when it was built. It was a modular design with the potential to fill those bits in later if required, so rather than shooting them, I would commend their vision You could of course just have left the ends off and reduced the main stand to 1700, but with the wings it takes 2200.
Besides, I rather like it. It's unique!
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i have it on good athourity, that the roof on the main stand was originally planned to extend another 30ft toward the pitch, giving better cover from weather and creating a better atmosphere, but again, cut backs had to be made