If you generate 10k test cases that find edge cases you wouldn't have normally found, that's value. If the framework is deterministic and always runs the same 1

If you generate 10k test cases that find edge cases you wouldn't have normally found, that's value. If the framework is deterministic and always runs the same 10k test cases, that's generally valuable as well. I'm not aware of anyone currently looking to ensure their test cases our generated using cryptographically random data.