I often play arty ranged, so I’ll speak to that. Inquisitive often has better damage and knockdown, but repeaters with expanded clip can be nice at end game for plenty of double shot and ranged power. Battle engineer has a couple aoe and renegade mastermaker can supplement.
Any ranged might consider improved precise shot against multiple lined-up enemies (when not building ranged power with archers focus) and a couple key epic destiny enhancements.
Do you have enough action boosts to fusillade? Leg Dreadnaught has some, as do a couple races, battle engineer, and some other class enhancements like Kensei or Ninja Spy. Also, look into augments for more. I like 10-15 for most situations.
Inquisitive often gets a few more imbues and capstone knockdown and tier 5 improved dodge clicks that makes a difference. Repeater arty can swap to Great Crossbow if you want to see how that works in fusillade. Remember that damage and damage type from crafted rune arms may not work. (Dino or LameOrdia) lots of hits can mean more “procs “ from damage types, so keep this in mind. The extra boosts from a rune arm can help, but the rune arm damage may not be that significant.
I don’t know of many ranged toons that don’t use Shiradi mantle. I guess you could try consecration healing or primal. Its good with lots of imbue. Most consider the fatesinger epic strike as the best ranged, but with lots of sneak attacks the shadow dancer is worth considering. 20-30+ d6 force damage on every shot adds up.
Alchemist and Artificer dps are nice that they can act as backup or supplemental healers. Caster arty often will have a repeater or BSword or dwarves axe that does something to supplement the rest. Bubble arty, is an interesting twist.
If nothing else I like to blow up crates with exploding rune arms for xp, trap for xp, and supplement healing and buffs to try to contribute to others who may be stronger or better.