In the context of Full-Text Search (FTS) indexing, creating efficient and effective indexes requires understanding and applying best practices, such as disabling default type mapping and specifying custom type mappings to include only necessary fields. Optimal field indexing is crucial, with options like indexing, storing, including in the _all field, and incorporating term vectors influencing index size and search capabilities. Numeric fields, often used for IDs, should be handled with caution; using text type and keyword analyzers instead of number types can reduce index size and improve performance. Future enhancements aim to provide more configurability in the index creation process, allowing for further fine-tuning at the storage level.