How to prepare for the real t2 release

So im 4.3k+ CP all runes 40+ pve build and pvp fully maxed now I basically just make lucent and want to know how to actually prepare for t2.

I just cant find any videos or posts about how to prepare for t2 no matter where I look so can somebody tell me what to actually save from now on to have a head start in t2 ( and I heard saving purple traits isnt worth becaue they turn to blue one is that true?? )