For use with an external source of Combo Duration (like the Dexterity Arcanes) and/or Naramon.

ONLY for Slash-heavy weapons. For weapons that aren't Slash-heavy, you can go for a Burst DPS build or a Sustained Toxin DPS build(CO Primer recommended for Toxin build).

Rank 0 Viral mods to bias toward Slash procs.

Quite inflexible. Requires Riven, CO Primer or dropping [Primed Reach] to get flexible slots.

Riven stat priority: Range ? CD = AS > CC > Dmg
Range is a great stat for melee, but doesn't bring a quantifiable damage increase, hence why it's "?" in relation to the others.
Riven replaces mod with same stats. If it has stats that can replace 2 mods it can allow space for a Faction mod.

Meta builds for melee and the rough lvl-range where they perform best:
Burst DPS - For lvl0-100.
Sustained Slash DPS - For lvl100-2000
Sustained Toxin DPS - For lvl2000-9999