I'd be happy if they can make a more refined version of the X09 with pricing range around $80-$150. Retain the clip and screen and add water resistant feature, dedicated volume control buttons and maybe a nicer DAC and better UI...
I agree, a bit more thoughtful solutions and aluminium chassis combined with a sub $100 price tag would be my wish.
There's also the X10 that usese the same chip and has a hold button that might be handy. Perhaps the volume control works differently on it as well?