I see your point.
I'll be honest - mine hasn't seen the light of day much so I guess I'm buying it out of "completeness".
However, it's not seen much daylight due to time rather than not enjoying the system...so I'm sure in my twilight years I'll have much fun. And I do like games sharing a rule set - it expands your game as well as keeping it easy to learn.
That brings me to a question - which I'll post in Symposia