Well, I think your suggestion is very good and barely needs any modification before being put into practice.

Comparing what you've suggested to Eliezer's response on the comments of xkcd's reddit post for the comic, I think he would do well to think about something along the lines of what you've advised. I'm really not sure all the finger pointing he's done helps, nor the serious business tone.

This all seems like a missed opportunity for Eliezer and MIRI. XKCD talks about about the dangers of superintelligence to its massive audience, and instead of being able to use that new attention to get the word out your organisation's important work, the whole thing instead gets mired down in internet drama about the basilisk for the trillionth time, and a huge part of a lot of people's limited exposure to LW and MIRI is negative or silly.