I had always avoided the Kings Field series because it looked like the gameplay didn't age well, but honestly after playing through Lunacid I think I have to seriously give them a try.
I'm also watching a retrospective on the development of Vagrant Story right now and as a jrpg fan it's wild to me that I never knew it existed back in the day. What they were able to accomplish in a PSX game is crazy. It makes me want to give it a try also
All of your points only have any validity if you could control what you actually hyperfocus on, which you cannot. It's not something that you get to pick and choose what to use it on or turn it on and off at will.
You really don't understand what hyperfocus is from your remarks.