I'd say yes. The Marvel Star Wars comics have a lot to offer. They bring new perspectives to the franchise and the illustrations are top-notch. But, as with any comic, some people might have different tastes.
No, Star Wars Marvel comics are not considered canon. Canon refers to the official and accepted storyline within the Star Wars universe, and these comics often exist outside of that framework.
Secret Wars is a major crossover event in the Marvel Comics universe. It involves multiple heroes and villains and often has significant consequences for the comic book storyline.
Yoda is not a regular presence in Marvel Comics' Star Wars. The comic series usually centers around different storylines and characters, and Yoda might not fit into those specific narratives.
Not all of them. Some Star Wars Marvel comics are canon, while others are not. It depends on various factors like the storyline and its alignment with the official Star Wars canon.