I do like him. I think he can be versatile (though I don’t think he will want to, too much, in his career — hey, but that is his choice), he has a lovely voice, a very powerful voice, and he appears to be quite humble and somewhat intelligent.
You caught his biggest flaw: he hams it up too much. Glams it up a bit much, and is sometimes over the top.
I predict a great career for Adam, and I predict he will tire of the current glam-rock, slightly goth look he has affected (as it is quite the artificial affectation), and I can see him going back to his natural red hair, softening up, and realizing that his center lies in his very passionate soul. I see him making people cry and laugh with his music. He has amazing potential.
The gothy-bowie look is only a phase for him. Once he comes into his own, he will be able to relax and be more himself. Elton John doesn’t wear the accoutrements he was first known for, either.
I think AI-19 at this stage should take a chance and form a band around him giving them a group name and hit the market like that instead of sending him out as a soloist. It would be first for them and good marketing thing for them to try.