
The last E3 I really enjoyed was seeing Microsoft get torched by Sony and everyone else at E3 2013 over the myriad poor decisions they made for the Xbox One, decisions which are still dragging them down eleven years later.
I guess I also sort of enjoyed the reveals of the crowdfunded games at E3 2015 like Shenmue III. Pity so many Kickstarter video games turned out to be complete busts. Nintendo shadow-dropping Earthbound Beginnings was kind of cool, too, even if they were doing it to try to tide themselves over until they could get the Switch out the door.
Other than that, though, E3 was a product of its time, and that time passed long before E3 itself closed up show. Even Geoff Keighley's Kojima-fest... I mean, Game Awards doesn't quite attract the same interest as E3 in its heyday.