Oceanspray - I'm not employed by Emirates, but one of my friends recently went to an interview, and she was about 2cm off the reach test, and she got knocked back because of that.
In no way do I mean to dishearten you, but the way I see it, they have soooo many people to choose from that they have no need to compromise on the requirements. I would imagine that they wouldn't employ someone who couldn't reach the equiptment/overhead lockers on all aircraft, especially if it's for safety reasons, as I imagine that wouldn't be legal.
With their weight needing to proportionate, I'm currently trying to put on weight, because I'm worried they'll see me as underweight, and knock me back, again, simply because so many great people apply.
(I hate writing things which might dishearten anyone, and this is just my opinion, so if I'm wrong, feel free to correct me!)