just because you can enable an option doesn't mean it will work. on a physical playstation, I could plug in anything that is molded to the controller slot, doesn't mean it will work. fpse would need to know what games will work with analog, and which won't. It would also need to know what hardware will support it's analog mode, and which won't. If the dev could figure out a way for pfse to read the hardware and make that determination, that would be good I guess. But, if that determination is wrong, and the hardware can work, but the check is wrong, that would be bad.
I tested analog with ff7 on my motorola bionic (whihc only has a touchscreen, no keyboard or any other hardware) and the touchscreen analog doesn't work. However, the touchpad works with FF9. I wonder if FF7 itself has the capability of using the analog pads. I know some PS games couldn't use them.
also, you should know the dev continually works to make fpse better. He has specifically spent a lot of time making xperia devices and mali400 gpu devices work. very recenty (yesterday morning?) when he released 11.42 he was trying to get anaolog working properly on xperia I think (if I understood his release notes). It didn't work, which lead to the .43.44and ultimately 45 rapid updates.