And that the teams below us are in better form than us.
As to the original question. None. You wouldn't be asking it about another club being relegated, because there is no bright side. You are only looking for any positive because it's Boro. It would be awful, possibly financially catastrophic.
There are none. It would be a disaster for the club in my opinion.
Remember how easily we were (twice) going to bounce back to the Prem? We'd just become a League 1 club and struggle intensely with a poor squad and no money even if we did manage to get back up.
You could argue that we've been meticulously planning for League 1 for 3 seasons now, so it's positive that we will reach our goal. Maybe the top brass will now show the desire and skill to set a plan to make us better.