Sometime the best creative energy comes from the players themselves. Allowing them to have input makes them care more deeply about the world they are in as well. As a GM the more we can do to make our players invest and buy into the stories we weave the better the tension and joy we feel at when the players have to overcome trials and tribulations.
If it does not break the rules or leave you in a situation as a GM where the story will suffer because of what “Yes” applies to. I say go for it.