I'm sure someone will put a 2.8A driver in it at some point.
I actually do like a 1.4A driver for XM-L for some cases. I built a P60 module with an XM-L at 1.4A so that I could use 18650's, and when I run out, CR123's. I find it to be quite practical. But I will agree that it would be nice if this one had a bit more fire power at it's disposal for those who want just an 18650 light.