Thanks, didn't know that. Sounds great, even though it would be even better to be able to add them right away "on the fly" .
If you don't want to use the function, it wouldn't be a point, but to the ones wanting it it would. And since you can type just as normal it wouldn't be any downsides for you and others don't using it, only upsides for the ones who wants it.
I thought I had seen a keyboard calibration option on iPhone, but can't find it now. I can't remember if I had it on my Xperia Ray (think so but not sure), but I'm sure you could calibrate the keyboards on my past HTC phones so that it would suit the way you typed.
I'm not just talking about a one-time calibration. I'm talking about dynamic calibration. Sometimes my fingers are positioned differently when I'm sitting down, lying on my side, in bed, standing up, one handed, two handed, etc. Like a "smart" keyboard. That would be cool.