It's all Steve Evans. He is championing this line with the tag line "y'know, for KIDS." While we did get the SpiderVerse and GOTG3 movie figures in there, there is a subline of Avengers figures with transforming mechs and an upcoming water-squirting Spider Man subline. Right now there's a range of X-Men 97 figures hitting in the line, too, because Disney+ was supposed to start the new cartoon continuation nowish before it got delayed.
This took the place of the Retro Legends Figures that got put "on hiatus" after the last wave this spring, more or less, spinning the focus to what kids would want to play with, but Steve is a big fan of 3.75" scale and his work with Star Wars and Marvel has borne this out to our benefit time and again. We will see how this one goes.