I know I'm about a year late to the request for new 5.0 features. But I would like to encourage integrating the excellent HypeBlendModes by @MaxZieb into the Hype u.i. I'd love to have a pull-down menu of ink effects that I can apply to any object and have Hype add the needed code into the Head HTML and apply the additional HTML attributes for me.
Me (and the folks I work with) aren't much in the way of coders. We're simple folks, haha. User experience add-ons like this would get used more by us than things like physics and bones.
In the meantime, take a look at display: contents. As for blend modes … they’re browser native. My implementations are simply workarounds to mitigate the downsides of Hype’s container structure, which I believe are unnecessary. As demonstrated in my 3D example, these containers tend to cause more problems than they solve. I genuinely hope they’re removed in version 5.0.