Energy weapons are fun. Two builds I've worked out that have been successful
Plasma FocusedMajor Trait: Fast Shot
Secondary Traits: Kamikaze, Built to Destroy
Major Perks: Math Wrath, Plasma Spaz, Action Boy, Meltdown, Grim Reaper's Sprint
Strategy: Less focus on sneaking and critical hits, and more on volume of VATS attacks at medium to close range. Can get around 10 VATS attacks with some weapons.
Laser FocusedMajor Trait: Built to Destroy
Secondary Traits: Any
Major Perks: Light Touch, Finesse, Better Criticals, Meltdown, Grim Reaper's Sprint, Laser Commander
Strategy: More focus on critical hits. Not as many VATS attacks, but has more utility for sniping