I have sometimes found that LOFT scenarios are ironically on the "wildly creative" or unrealistic side. Too many things go wrong.
As I understand it, the objective of LOFT is to deal with CRM issues on simulated common line flight. At a previous employer, a typical LOFT scenario would be over a common and non-complicated route with typical weather, and then they might introduce a not terribly significant failure. This made it all the more realistic, rather than a session where everything is failing or burning and none of the airports are optimal.
