Flybar the weather can be a problem but it's not the problem it was 20 years ago. Aircraft and technology have moved on.
Pintofdoom airports aren't just about passengers... by your original logic of saying MME is doomed by the new terminal plans at LBA it can be said that MME will be saved by the Southside plans! And LBA and NCL should give up competing in the freight and ancillary areas regarding an airport. Thus MME carves a nice domain for themselves and the two bigger neighbours may as well not bother to compete in those areas.
Your post sounds like you dont like the idea that the mayor is delivering on his promises!