We do possess in-depth knowledge how back- and front-end of BW works the most effective way and on a variety of DBMS. Running a review of a mature BW system, identifying the pain points and critical performance gain possibilities is something we can accomplish in just days. Naturally, this would include ABAP routines review in the transformations, extractor enhancements audit, general modelling health-check, etc. Your internal BW team will just need to execute on action points. Or we can do it for you, too.