Kyoto GP Long is one of my favourite tracks - I think I've logged over 1000 laps there in FOX and FO8. I dislike the chicane however. You have to cut it to be competitive, whether that's on the left hand kerbs for hotlapping or over the grass on the exit if you're online. I think something like a mirror version of the T1-T2 chicane would be a good solution - a wide, pretty quick (4th gear) left right with steeper kerbs. This would be more in keeping with the rest of the track and still maintain high speed so the final braking point would still be hit at around V-Max minus 10mph.
It would also work in Reverse, which is GP Long's biggest failing.