For Frames most of old builds still work, with helmith now that you can fuse other frame abilities that can force some new builds for frames, for guns most of them same just most of them are viral now isntead of Corrosive/Gas, and for melee 7-8month guides.
1. Status change happened somewhere in the middle of winter (2k20) dont remember the date :D . Atm Melee is best option for high lvl stuff. The Primary is mostly just carrier for Amalgam Serration 😄
2. Zaws not that much anymore, there are better options out there. Kitguns are pretty good option both secodary and Primary kitguns.