[jimktrains2]

Neither seems like good functionality to add to HAProxy. They both seem superfluous and almost antithetical to what it was in 1.5.

Why is it nice?

[eropple]

I can see some value to Lua; it allows for more complex routing rules in a way that's comfortable for a programmer. (This is pretty much what I use Lua for in nginx, too.)

Mail, though--yeah, nope.