Shower thought: Early IDW has some odd simmilarities with early Game of Thrones (read description)
Off of the top of my head, and spoillers for both the comic and GoT/ASOIAF:
1 - Both stories start in a post-war period;
IDW - After the big war where eggman took over the world.
GoT - After both the Robert Rebellion and the Greyjoy Rebellion.
2 - This leads to all kinds of power vacuums, and shows all the struggles of the heroes on adapting to this new reallity
IDW - With Eggman out, MSonic tries to take over, Sratline tries to restore him back, even R&T take over a village to get a piece of the pie. All while the Resistance goes through an identity crisis and shakeups, with new heroes trying to find their place.
GoT - The court becomes more corrupt, advisors steer the ship at their liking, the king doest want to rule, the Lannisters plan their takeover, the crown goes into dept, the Targaryens gather allies...
3 - Both plots are kickstarted by a big mistery, the heroes go after awsers
IDW - Who is behind these new and more coordenated badnik attacks? This leads Sonic and the Chaotix to Windmill village with hints and latter the big fleet.
GoT - Who killed Jon Arryn and why. This convinces Ned to leave for the capital and accept the role of hand.
3.5? - Oddly enough, while neither prime suspects end up being the original culprits, they do end up being the main antagonists later on.
IDW - It wasnt eggman.
Got - It werent the Lannisters.
4 - Both feature a type1 protagonist, that try to do whats right by upholding a personal code of conduct, even when more easy and/or logical solutions are on the table.
IDW - He lets Mr Tinker stay in the village (while arresting or killing him would be more "definitive" options), and lets Metal go after Angel Island (instead of dismanteling or reprograming him), as he believes they deserve a chance to do good and change their ways, and while he is far from being the main culprit, this snowballs into everything post issue 12.
GoT - God, so many examples, but ill choose Renly, as he proposes to help to take over the throne with his 50 men, as the Kings children are illegitimate. Ned refuses as it means supporting Renlys claim, which is behind his older brother Stannis in the line of succession. This leads to him hiring the gold cloacks, that later betray him for gold.
There might be more so let me know.