Thanks for the constructive criticism! I've been trying to revisit some of my setups lately, since they are pretty old. I'm not a huge fan of FFs either, but I like the challenge of trying to get one to drive the way I like. I mostly drive and tune for 2P battles on the Nurburgring with a friend who uses an STi Spec C, so FFs really can't/don't do much for me.
Looking at the setup again now, I can probably go with lower damper settings all around, and different spring rates. I've also been toying around with the tunable LSD lately, and your estimate is pretty similar to what I've been using on my other FFs now. I realized that the 1.5 and probably even the 2-way LSDs offer too much acceleration power, resulting in wheelspin. The lower acceleration value seems to be the way to go, and I even got a 380hp SRT-4 to drive somewhat acceptably.
As far as downforce, I'll try lower values for the rear. The setting of '25' tends to be my typical setup, no matter the drivetrain. I guess in the end, it'll vary depending on where I drive the car. I'd probably need more downforce for a track with long straights like the 'Ring, where I typically drive.
On some of my FFs, I've noticed that somewhat high stabilizer values would cause my car to swing around quite a bit. At least that was the case when I was trying to drive Citti Di Aria with its repeated direction changes. I don't really drive there much, so it probably wouldn't hurt to try bigger stabilizers on other tracks.
These are definitely some things for me to consider, though. I hope to try and work on some of my setups tomorrow.
A couple things I would look at when tuning this vehicle.