The "OPL Maintenance" section of our forums has several threads about improving the OPL and tools to use it.
Contributing useful comments and suggestions there can help those designing and implementing changes. Here are titles of some posts which might interest you:
1) What other metadata would be useful for OPL problems?
2) … educational objectives taxonomies for new OPL
3) OPL grant master plan
4) Cross-listing in the OPL [e.g., revised status for "Precalculus"]
5) Trigonometry - revised taxonomy for OPL