Seeking Workforce Feedback

Summary

Our experience so far has been terrible

Content

Hi, I'm looking for general feedback on the Workforce module, as our experience since implementing ~9 months ago has been quite frustrating.  I'm trying to figure out if it's unique to our implementation (over complicating rules/processes), or if other organizations have experienced this, too. 

Our background: We've customized the out-of-the-box Workforce module to plan 6,000+ employees at a detailed level, including salaries, bonuses (not spread evenly across months), and a handful of benefits/tax items that vary by legal entity.  These employees are spread over 300+ potential cost centers, 70+ potential entities, 280+ potential regions, 40+ potential business segments, and 40+ currencies.  We currently have employees sitting in 1150 such intersections.