To be honest, I'd love to see Ceki contribute code to Log4j2 and, in
fact, there is nothing from preventing him from doing that.
I am not going to bullshit you.
I wouldn't expect you to ;-)
Although I like many of the things you've done in log4j2, I won't be working on it in the near future. Having said that, you never know, things change. BTW, the invitation goes the other way round as well. You are welcome to continue contributing to logback as you had done in the past. I know that the message interface was a major sticking point but the idea is likely to make it into the SLF4J interface in a major way sometime in the future. It just has not happened yet.
The Message interface was just the first thing that got me going. The other things are all pretty much listed on the log4j2 intro. I suppose the most major point though is that I still prefer to develop here.
While you may not be directly working on Log4j2 it should be pretty obvious that you had a major hand in its design. I looked at every single thing that I could in Log4j and Logback and tried to decide what to do with them. So, although there isn't any code from Logback here a lot of Log4j2 is still your idea.
And I just might contribute a thing or two more to Logback still.