For example, the bracing added to the crossties for the seven inversion arrows:
You can also see a bit of my attempt at making the box-style supports Arrow used at the bottom of those loops by using SafariJ's CS set. I'd like to make those as a CSO too (along with a few other pieces missing in SafariJ's set). For reference:
Great American Scream Machine was long standing at my home park, and is the first inverting coaster I rode. I love Arrow's and would kill for you to send me the CS of the loop bracing, would look great on my ShockWave replica.
I agree that Safari J's Arrow pack is great but slightly lacking, I too am annoyed that his loop supports are for low to the ground early corkscrews and not mega loopers. I did the same thing with box supports for loops in the past...

Glad to see someone else still making Arrow's on RCT3!!
PS: What CS did you use for your support "A"-Frame?