To be honest, I never play(ed?) P2 as “Protoss Tychus”.
I usually go “single production structure type”:
- Warp Gates: for conservators providing defense and warp at location, adepts shooting everything, and some legionnaires to divert enemy fire, amassing big numbers is also easier.
- Robotic facility: mass colossi can intercept all attack waves thanks to being targetable by everything, some immortals for extra damage, Fenix (dragoon and arbiter) and Warbringer abilities for anti-air (also possible to make photon canons outposts and lure enemies in, depend on map and circumstances)
- Stargate: best mobility (regarding ignoring terrain), scouts can shoot everything, some gates should specialize on carriers to not cut the ability to build/rebuild scouts
I don’t play Brutal, but used with the right TPO, it work. I may be forced to make a Robotic Facility just for observers if I feel Fenix Arbiter and photon canons would not be enough as detection though.
With Fenix, I play P0, P1, P2.
P3 I really don’t understand the concept, I only see “heroes nerfed”. Not sure what niche situation would make me go “Great, I’m so glad I picked this prestige out of all of them”.