I prefer my collage, but that's because I'm an attention whore.
Y'know, I don't think I've ever made a breakdown of how wrong Willis was to change the strips. Here I go:>Walky took away focus from Mary
Mary was not the focus of this point of the story. The focus was on Ruth and Billie.>Walky and Dorothy being in there felt awkward
That's exactly how the characters probably felt too. It's a good thing to be awkward sometimes.>the eventual health center scene
It didn't NEED to be eventual. There was no requirement for the story to shift to the health center at all.>Dina pouncing Mary is out of character
Then just scrap it. Mary trying to keep control of the situation when she clearly has none still works as a punchline. Honest to God™, I never noticed Dina the first time I read the original strips.>I was given narrative room for important information
There was nothing new that we learned that could not have been brought up later nor served any integral importance to the story at hand. "Mary's blackmail was exposed" and "Walky is Billie's emergency contact" are not important, especially the latter. Having room for a narrative does not make your story better, especially in a comic strip with a limited amount of space such as DoA. If you want to be able to explain yourself, write an actual book.