pointed out something that I believe other people might questioned about before. Roasts should not take more than 5 minutes to make. People shoudn't need to subscribe to what you have in order to roast it.
If you're submiting your community to be roasted, people will roast your about page, not the inside of your community. If you're selling an app or a service, people will roast it's landing page, not review the app journey or the service itself. If you're submiting your profile, people will review your description and the things that fit in the first page on it.
And if you're submiting your content, it has to be a short content, not a long video or a huge text. That's why I'm renaming it to short content. Make it palatable.
Roasters can go beyond and actually subscribe in order to review your submission, but that's not required.