Excellent post, Broom Kid. I was trying to avoid answering the question directly, but you summed my feelings up perfectly. Just because Abrams made one good Star Wars movie doesn’t mean he can’t make a bad Star Wars movie. His on-the-fly storytelling method is the main reason why the latest movie was so disappointing. Sometimes it’s a blessing, like in TFA, other times it’s a curse.
In general, it’s a lot easier to start something without a plan than end something without a plan. See: Lost.
That’s not to bash Abrams, who I think is a very talented director (not writer) but maybe it’s best to keep him limited to first/second installments.