You can use the REST API to make bulk changes to Contracts in BigFix Inventory. Documentation is here: REST API for import of contracts. Using the command line tool cURL, you can use a CSV file as your data source.
I agree that the query capability is still needed. However, if you are managing the Contract list in Excel so you can import changes via cURL (as above), this may be less important.
Starting in version 9.2.5, IBM added support for the Install Seats license metric. Documentation for this is here: Reported license metrics and License metric utilization.
I believe the Threshold and Threshold Delta columns are not visible by default, and need to be added to the All Metrics report via report customization (gear icon).