What they got right: I have to give Flynn some real credit at how he's handling the characters. Sonic is willing to accept Khan and Sally's current relationship, but you can still feel a level of rivalry. And there's still a connection between Sonic and Sally formed by their years as friends and a couple. And the other characters in the story are not forgotten, but given a sense of realism without reflecting some version of "our real world" that usually means "dark and gritty". However, these interpersonal relationships not only don't stop or bog down the story, but actually makes the story more natural and believable. I wish more writers in all mediums (not just comics) followed this comic's example.
What they got wrong: I just went through the whole comic again and came up empty.
Recommendation: If you want to know what a good comic is like, Sonic the Hedgehog #209 is a perfect example.