It depends on what you mean by "good".
I can foresee a time when the "difficulties" resulting from Brexit are so significant and occupying the news to such an extent that a trade deal on any terms will be seen by many as being good because at least it's
- Some kind of deal..
- Our deal because we negotiated it without the EU so it must be better than the previous deal we had as an EU member
- Taken the bad news off the front pages for a news cycle or two
- Obvious that anyone pointing out any flaws in the deal are merely Remoaners continuing with "Project Fear"
No matter how wretched it is, the Daily Mail, Daily Express and Daily Telegraph will simply insist that it's the best deal ever and a clear indicator of the "sunny uplands" which are the inevitable result of Brexit.