Dynamic weights in full text search

Currently, when we need to execute a full text search query with weights we must specify these in the createIndex command.

If we need to modify these weights we have to create a new index and drop the old one.

In order to improve the flexibility, we could specify the weights in the query and not in the index (ElasticSearch does it in this way.). Or in both, having priority those specified in the query?

Thank you!