My mod progression (chasis related) listing in "stages" of stuff I installed at close to the same time:
0) Started with a bone stock .:R
1) Haldex + switch, Neuspeed RSB, Autotech dogbone insert, 21 lb 18x8 wheels
2) Passat aluminium LCAs + spindles, Koni FSDs
3) RB 330 brake kit (also slightly lighter than stock Centric rear rotors)
4) 17 lb 17x8 wheels, HPA dogbone, Tyrol subframe collar kit
5) 034 trailing arm spherical bushings, GC coilover conversion kit at 450lb 7" front, 350lb 10" rear
That's where I am right now, with a front ride height of 26.75 and rear at 25.75 both dialed full down.
Question on front end mush - yes - definitely still an issue with the FSDs. The Konis were a great overall improvement and perform as advertised with tighter damping under steady corner load and much better than stock small bump absorption. I think my confidence level with the car, how hard I drive it, plus other mods make it hard to compare from memory now with / without FSDs, but the main problems (for me) are still front end dive under braking, front body roll and lack of ability to take big bumps - mainly mid corner. I will be putting on a new front air dam as soon as I get my springs sorted coz my original one is ground down to a little nub from dragging on the ground so much. The FSDs may have helped with those issues to a point but can not fix them by themselves - at least not on this particular car (given its front end weight and wimpy stock front springs). So I'm pretty sure stiffer springs will help. It's just turning out to be a bit of trial and error to get the right ones. Live and learn...