Pros

• + Easy and Achievable Items. No League Specific or Legacy Items are needed. All you really need are some Uniques with Life & Elemental Resistances on Rare Gear. No need to stack 10+ Abyss Jewels.
• + Adaptable. You can easily swap out some gear and skills to suit your own play style. e.g Tornado Shot or Lightning Arrow for clearing/mapping.
• + Easy Map Boss Killer. Uber Elder, Shaper and (Shaper/Elder) Guardians are cut and dry, no extra mechanics needed, just need to know their basic mechanics and you'll be fine.
• + 5.6K+ Life. With a bit of investment in gear, you can EASILY achieve a life pool above 5.6K, this build usually ends up around 5.7K to 6.1K of Life.
• + Start Build Friendly. The template of this build can be a nice starter build for a Temp League, no need to respec or level a new character just to play this build.
• + Beginner Friendly Endgame. Once you get use to the Scourge Arrow mechanics, you can just simply fire away from a safe distance and the Thorn Arrows (from the Spores) does most of the work for you.

Cons

• - Cannot do REFLECT Maps.
• - Cannot do Hall of Grandmasters. Only a few builds are dedicate to doing and farming this map. This build definately isn't one of them.
• - Leech Rate. Unlike Barrage where you fire continuously and maintain a level of DPS and Life Leech, Scourge Arrow can't to that, so you can't face tank Endgame contents.

Pros

• + Very very very VERY Fast
• + Not that expensive
• + Can be played as MF
• + INSANE clear
• + Shatter sound

Cons

• - Hard to get back in if you run out of charges
• - Can't do end-game content (Shaper, Uber Elder...)
• - Can't do ele reflect maps

Pros

• + decent AOE
• + great single target damage without Barrage or Elemental Hit
• + great clear speed with usual high Pathfinder mobility
• + permanent flask uptime
• + no need to PIERCE heavily, like in CA setup
• + REFLECT IMMUNE (all reflect!)
• + 45-65% dodge

• - Still pretty squishy as relies mostly on acrobatics and Evasion.
• - stacking Virulence is harder with slow bow
• - 111 INT required for proper gearing

Pros

• + No legacy Gear
• + No Abyssus
• + No weapon swap
• + No Mirrored items
• + 7+ mil dps
• + 160%+ move speed
• + Clears all content

Cons 

• - not for every player 

Pros

• + Cheap league starter.
• + Can clear all content. Including Uber Atziri, Shaper, Uber Elder, Hall of Grandmasters
• + Can run all map mods with small adjustments.
• + Easy minimalist playstyle.
• + Very tanky.
• + Loads of DPS from beginning to end game.
• + Variation available.
• + Can have very fast movement speed for map clear and Uber lab farming.
• + Can farm uber lab.
• + Molten Strike finally got an MTX.

Cons

• - Molten Strike finally got an MTX (potentially incoming nerf).
• - Can get expensive for optimal version.
• - Not the fastest zoom zoom clear speed around.