I havent read through the entire thread. My opinion on the WCO is that, it's not a bad offense. It's a short controlled passing game. You can still run and pass. You can still be balanced.
I prefer throwing down field more & spreading the wide outs, instead of the bunched up formation & short passes, but's that's my style, my preference.
Different WCO for different flavors. Some are more complexed. High schools do not usually run them, and only a handful in college. It's best to have a QB who is running it for 4-8 years. Again, my thoughts.