Can I say "desirable" instead of "encouraging"?
“Desirable” isn’t quite appropriate for this context. The speaker uses the adjective “encouraging” here to mean that the changes seen in Beast as a result of his love for Belle to be “positive” or “promising,” hinting at a hopeful future. Thus, “promising” would be a better fit than “desirable” here. Ex: The improvements seen in my student’s math grades are very encouraging. Ex: The company is showing signs of recovery, which is very encouraging.