maybe it could be like the crossbow but it can head shot which does increased healing and damage on head shot but decreased on body-shot.

it could give team mates health over time on hit, like the amputator's heal but for one person.

Same fire rate and projectile speed as the default crossbow, but it gives you a 1-2 second minor speed boost when you hit a target, depending on range.
If you hit a teammate, they get a smaller version of the speed boost (+20% instead of 40%), and have a static 25 HP healed regardless of range.

I feel like crossbows will be made as status effects, so whilst the crossbow is made for team survival, how about for this one we have an enemy debuff:


+ Pierces up to 3 targets
+ On hit: Target is inflicted with bleed for 3s, second target: 5s, third target: 8s
- Deals 15% less dmg
- 10% longer firing/reload speed

what ifffff:

+ On hit: inflicts bleed for 3 seconds
- 15% less damage

when an arrow hits a teammate, it deals 20% (or 30% idk :b) health damage, and inflicts bleed for 3 seconds. it then gives that teammate mini-crits for 3 seconds.

However, it also deals damage to you, but instead it's 50% health damage.

Upsides:
On Hit ally: heal based on distances
On Hit enemy: deals 3 seconds of bleed.
+20% projectile speed
If you hit ally thats under 50% health: give them 3 seconds of mini-crits.

Downsides:
15% less healing compared to crossbow
can't give overheal
33% slower reload time.

It should give enemies tetanus as a dot effect at the cost of not healing teammates

maybe the harpoon does higher damage, mainly on headshots. but you loose the power to heal people by shooting them?

Give it a smaller, heal over time effect on allies and small damage (15-45) on enemies plus 6 seconds of bleed

new idea. much more effective healing being able to fully heal a teamates health with one shot and rewards it by regenerating your health. however you lose your damage towards enemys.

( I am bad say england)
what if:
This weapon applies a corrosion effect that reduces the enemy's attack speed by 8 seconds, but deals less damage.
also, when hitting an ally, it will heal less but increase attack speed.
Upsides:
Applies the corrosion effect to the enemy for 8 seconds, reducing their attack speed by 25% and increasing their ally's attack speed by 25%
+35% projectile speed
Downsides:
-20% heal
-20% damage
I think this way the medic stays supportive