Haha, thanks Dave! I'm super stoked with the car so far.
Plan is to track it at VIR in November, I'm pretty sure. May do fall Shenandoah or an NJMP event in a few weeks. Might autocross it this Sunday, depends on the potential weather. The BRZ has nearly no tread on the tires and I don't have time to swap tires this week, I'd rather not die on a highway driving to Dover, lol.
The X drivetrain is more advanced, to some extent, because it has the variable center diff and proper front LSD. Everything that the X was doing shifting power around, the RS attempts to do all in one diff unit. The RS can pull it off due to the fact that the rear diff is over driven versus the front, so full diff engagement pushes the rear of the car around. I definitely wish the RS had a proper front LSD, there's been times where it really wiggles the steering wheel as the inside front tries to spin up while driving over crests in the road. I never really had the skills to use the X anywhere near it's potential when I owned it (I was maybe at 7/10ths?), but the way the RS drives just feels unreal. Maybe the X feels like that at the limit too. I must say, it's a VERY weird feeling being able to just keep adding power earlier and earlier in corners. Definitely going to take a bit to get used to.
No mod plans at the moment, I'll drive it and enjoy it for now.
I'd love to do a comparison between an R and an RS. That recent drag racing video is a touch silly. The R is a quicker car in a straight line, look at dyno charts to see why

I'd bet the R gets its ass handed to it around corners though, the RS is pretty absurd.