The “ascended fanon” arguement is so petty and lacks logic. It would be like only accepting Fausts writing as canon, and disregarding everything else(her contribution up to this point would probably make up %25 percent of the shows writing, and only about half the characters she herself included or made). People argue the same god damn thing with the archie Sonic line, but really, you could technically argue any of the games not made by Naoto Ohshima as canon, there are so many writers that go into franchises, who wrote what doesn’t really matter, you go with what you want. There are no rules to what is canon and is t, it’s what either the holder of the franchise says or, what you think.
The IDW comics really just help strenghten the depth of the world and its characters through action and drama, like most comics. Its character driven, and seeks to add to each character. The show obviously does this too, but in a more tame and (lately, soon?) mellow or even cliche manner, which isn’t that interesting without humor.
The comics really just does that same method of what lured us to the show in the first place, interesting characters doing interesting things, and make us laugh while doing it, the show can usually only switch between those two. As there’s less production time and value, they can have more depth to top it up (like what the above said with the Tranformers comics). Same as applies to the Sonic series of comics, the actual marvel comics compared to the films, or recently megaman.