Fletcher3…damage is bad? jeez. They are the king of WB in Rank 7.
Fletcher can solo Merc Mission / rush dungeons. Fletcher can solo WB and get a cube easily.
The only thing Fletcher is lacking atm is AoE.
That is Bodkin.
Broadhead is the one that make the enemy bleed. Awesome PVP skills 
I wouldn’t say it’s a bad choice for rank 8. Since they are still top 3 WB DPS (not sure if this changed in KToS). On average I’m hitting 8-8.5k per tick so around 200K Per magic arrow that’s a lot for 5 secs cooldown skill. I think people are re-rolling because they keep seeing huge burst damage + glass mole on KToS videos.
Every class has different play style though if you look at this thread:
Most of players are leaning toward Mergen.
Fletcher/Merg
Wugu/Falc/Merg
Scout3/Falc/Merg
ETC.
A2-R1-SC1-F3-Mergen (main)
A1-R3-F3-Hakapalle (alt)
That’s my plan for rank 8. I’m sure they will adjust each class and make it more balance(?) 

If I am to go with Mergen on R3 it will be quite a challenge to get that nice crit rate with 2H bow. You would need atleast Lv 7 x 3 green gems but you can go with either. Plenty of R3F3 KToS players went with Mergen although they are high/full Dex build so I’m not sure what is your stats distribution atm.
…but then Fletcher 3 is so delightful to play.