Visual Association Centers

I've been considering a visual novel for a while, particularly due to my experience with the Phoenix Wright games.

As such, my first hope was a fan fiction of sorts for that series; outside of a crossover, it's a little hard for me to think about fan works that wouldn't themselves be visual novels.

Of course, an original visual novel might be fun, too. There would be a lot more to put together than for a plain text-only, one-route novel, but that's the point, isn't it? I would just have to figure out what story wants to be seen as well, and not as a manga; what story could be playable with some alternate courses of action.

One friend has suggested Midnight at the Iston Diner for this. I am sort of drawn to the idea of doing more of a mystery for my visual novel, given my inspiration. It really wouldn't be bad seeing Jenny and some of the others, either.

What kind of visual novel would you want to play? Does anything of mine, Iston or otherwise, strike you as a good story for one? Would you even want to try a visual novel from me, or is it safer to spend my time on "normal" novels?