Rewrite the base app as a query tool, with some excelent query result tools,
Make it plugin based so you can ommit unused features features.
Make it so lightweight that you can use it as automation script step.
EX: call S3T with parameter export to pdf use this script - PDF-export.js
or call S3T -title "create a spreadsheet" -script ./excell-to-accounting.js -export-path ./accounting/