Perhaps he can team up with my Moth Man superhero who is really fucking awesome until someone turns on a light and he spends his time fluttering around it. It's his Kryptonite. Are you saying it doesn't need to be held in his little bat hands? We've veered wildly off topic here but, in a way, I feel we've saved this thread from itself.
I'm a big fan of the robotic voice, personally. Whether or not it's solely a characteristic for that particular version of his suit, it seems like a logical idea that a well-known billionaire with a penchant for high-tech devices would utilise something to prevent people recognizing him when he talks. I also imagine it would be quite creepy to hear that coming out of the shadows.