As I recall there are various "perfect" Shepards out there on the internet, but I just made mine on my own while routing 100%. That said, I would actually recommend against lv. 60 (which I've been playing at) anyway and instead try to find a nice threshold at a lower level (maybe around 40-45?) to get faster kills with your weapon and powers as in ME2.
I'm also using a "safer" build than in the NG+ WR (Assault Rifles as my bonus talent for improved weapon dps, Singularity to prevent getting thrown Thorian and Benezia fights, and Barrier to make me all but impervious). It works pretty well, but I'm thinking an optimal build would be a Vanguard with Pistols, Throw, Lift, Overload and Adrenaline Rush (lowest level of AR should be plenty). Assault Rifles may work instead of Overload, but I doubt it would be faster.
I'm also using a "safer" build than in the NG+ WR (Assault Rifles as my bonus talent for improved weapon dps, Singularity to prevent getting thrown Thorian and Benezia fights, and Barrier to make me all but impervious). It works pretty well, but I'm thinking an optimal build would be a Vanguard with Pistols, Throw, Lift, Overload and Adrenaline Rush (lowest level of AR should be plenty). Assault Rifles may work instead of Overload, but I doubt it would be faster.