Can we bring back PTB themes for some killers?

I really don't have enough context or understanding to know why some of these themes were replaced given how good they were. If there were any possible way to return them to the game, I would please adore it.

At least certain sections of older themes like Demogorgon's 8ms and Xenomorph's 32m-8m I would REALLY want implemented into their live themes somehow, since most people didn't like the chase themes.

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