Now that the environment is properly configured, we can begin to develop the code. This script will index new data to Splunk, run queries on that data, and export subsets of data responsive to our queries to a CSV file. To accomplish this, we need to:

1. Develop a robust argument-handling interface allowing the user to specify these options.
2. Build a class to handle operations with the various properties' methods.
3. Create methods to handle the process of indexing new data and creating the index for data storage.
4. Set up methods for running Splunk queries in a manner that allows for informative reports.
5. Provide a mechanism for exporting reports to a CSV format.