BTW, I'd bet good money that if you went through any other aircraft cert (Boeing, Airbus, etc.) with the same fine tooth comb that is being applied to the MAX, you'd find plenty of issues.
Yes, I fear you may be correct, many of the issues found on the MAX may cause corrective actions to the NG as well..
Look at the manual trim wheel issue, redundancy in systems such as AoA and ADIRU,, and the FCC' protection as examples...