I have some questions below, though I understand if you prefer not to address the topics therein.
> The components to this include an emulated AVR microcontroller, an emulated hardware device built out of three of those microcontrollers, a scratch-built C compiler, a scratch-built fully-functional debugger, and an in-browser UI to tie everything together.
I'd say you guys jumped into the deep end of the pool and your goals from a technology standpoint were ambitious, to put it politely. Do you think that you would have taken a different approach if you could do it over again? Did you have to invent these wheels or where there other options you could have leveraged to accomplish the same goal? Is the technology you are building part of your competitive advantage? Having seen in-browser consoles and programming environments, I just have to wonder what the advantage is of coming at the recruiting problem from a hard computing perspective. As a programmer, that is the way I would approach it as well, since that is where I would feel I am making the most impact, but that would simply be to make me feel useful and not to move the company along, necessarily.
Also, I detected a hint of discord in yours and tptacek's posts during and after your release. Would you say that the process has put a strain on relationships, even if temporarily?