What niche phone features would appeal to you?

I went through my late teens as the initial smart phone boom was happening. I had a Motorola q that could get TV channels and had a keyboard. I had the enV that flipped open. And many androids/blackberries that I loved for their unique form factor and functionality.

I have never balked at spending money on a phone and for a long time i felt locked into generic flagship devices. With the debut of folding screens I feel like my appetite for unique devices rekindled. I think the power of android lies in its diversity of implementation.

So what features and functionalities would you choose over the next flagship release?