Yo
gums,
As discussed previously, an aerodynamic correction (‘fix’) might not be particularly easy, if at all; and / or it could affect the economics aircraft operation. Aero fix might not sell so well, MCAS fix might require extensive
PR / discount to improve sales, but does not guarantee commercial success.
As you note, a key parameter is public opinion. Historically, adverse perceptions fade or can be ‘adjusted’ - e.g. power of fake news, but the depth of feeling in this instance is unknown. Overseas operators, not on US soil, might be easier to dispel than would a home grown accident, but - the unknown effects of home certification error and poor oversight.
Beware the fickle human. Aviation safety has ranged from the domination of technical failure, through human ‘error’, to systems views, where in the widest sense the public within the ‘system’ has an input via media and politics.
It would be unfair to make a direct comparison with the demise of turboprops in the US regions. It happened, perhaps without great fanfare or body count, but it changed the operational industry and over time the marketing of newer types - the power of commerce, money talks.
If MCAS mods are approved, which appears likely, then why spend money on Aero fixes, but if other problems dominate - trim, then aero fixes could address both issues. Expensive and time consuming; requires balance, but as yet perhaps not Boeing’s call.