Adelaide Oval's Football Ground Dimension

Ive always wondered why Adelaide Oval had its lines painted in such a stupid shape which is nothing like an oval. I just assumed it had always been there.
Then I stumbled upon this old photo from the 30s and I was amazed to see back then they had the common sense to paint the lines in a much better shape than it is these days. Why don't they make it more of an oval and paint the lines like they used to??

Then I stumbled upon this old photo from the 30s and I was amazed to see back then they had the common sense to paint the lines in a much better shape than it is these days. Why don't they make it more of an oval and paint the lines like they used to??
