First of all this is analogous to the irritating tendency of car manufacturers to "tease" models ahead of time. This may cut it for the average consumer, but here you are targeting the developers, and a straightforward, honest approach to launch would be more effective, in my view. Developers are blasé to any of the mind-tricks which marketing will dream up. Second, please do some moonshot stuff. Please just don't gi…
Not that those things are bad, they're just meant for a different audience.
If you want more moonshot-y stuff, emscripten, asm.js, rust, and servo are all pretty worthy of your attention. :)