I can't speak for others because I don't watch other NFL teams like I used to, so I'm not "in the know" on the next best coaching candidate or the next Sean McVay.
However, I have written extensively (and perhaps it could be cleaned up some to be a little better written, but issues would remain the same) and I know others have written extensively about the issues of Roman.
If you haven't seen good arguments, you're not really looking. Doesn't mean he'll go, but the microscope has been firmly on Roman for two years, so there's plenty of intelligent analysis out there regarding issues he has for the Ravens and how those issues have followed him from Buffalo and San Francisco.