For number 1 I use perspective with projectile. https://github.com/nex3/perspective-el https://github.com/nex3/perspective-el https://github.com/bbatsov/persp

For number 1 I use perspective with projectile. https://github.com/nex3/perspective-el https://github.com/nex3/perspective-el https://github.com/bbatsov/persp-projectile https://github.com/bbatsov/persp-projectile