I feel like we're gonna get Stormbringer Thunderwing, as that version felt "large" and those huge wings will make him look more impressive for $100 toy
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So the speculation about what Sentinel would be got me thinking because I came around to the idea that it would be the design they went with a few days before it was unveiled.
And that's because Hasbro is rolling out a comics Studio Series subline soon.
Now Hasbro treats the various lines as just vehicles (ha) to get figures out. SS '86 itself was created to get some CHUG '86 guys out after they committed to splitting the last leg of WfC between '86 and BW. Buzzworthy was a catch-all "whatever we can't fit elsewhere" line. And so on.
My theory is that they had a bunch of IDW figures lined up, and a comic subline of SS was the means by which they could get most out. But they had a few stragglers. Sentinel, being a Prime (or at least Prime adjacent) with some history with the Thirteen made sense to shuffle into AotP.
If we continue this train of thought, it's possible that IDW Stormbringer Thunderwing was also in that slate of IDW designs, and likely one of the few they couldn't slot into the new SS comic imprint. So... next CHUG line gets him as a Commander.
Maybe I'm seeing patterns that aren't there... but that new Sentinel is VERY IDW and we know they have a slate of IDW stuff coming so... IDW Thunderwing seems very fitting.