Hi, I've been trying to decide what Monk Thrower to make but still undecided up to now. I've never played one before.
IMHO, the big thing to consider is what are you going to do with your thrower? If it's just "oh, I want to try one for TR", my best advice is avoid it at all costs. It's the worst most painful leveling experience you can find. It's worse than leveling a tank as a tank.
You probably won't believe me; that's OK. It's traditional for newbie-throwers to try leveling as a thrower despite the entire forum warning them not to do it. You'll hate that life. We'll nod. Then next time you'll level as something else: INQ, Qstaff, etc. (varies by player taste).
Throwers are so much an at-cap style that they've become effectively raid-only. They don't have to raid; it's just that they take a fair bit of gearing and if you aren't going to sit at cap for a LONG time, that gearing effort won't see much use. Raiding is what to do at cap.
If you want to make a character to sit at cap to raid & RXP with guildies/etc when your main is low from TR, a thrower is a pretty fun choice. It's harder to do than INQ, but it's fun and different compared to all the xbow builds running around now.
I'd make a couple changes for a new-to-thrower player: 20 monk instead of 18/2 and Fatesinger ED instead of SD. The OP has some notes about what to swap for a 20 monk.
My question is: Why 2 Dark Hunter? Is it just for trapping? I see you take no points in the enhancement trees.
Does it suffer DPS by going 2 Dark Hunter over Pure Monk?
It's only for trapping, but it also gains a feat, which I use for Luck of Heroes (3 skills & 4 saves).
DPS loss is ~3% for 18 Monk 2 DH versus 20 Monk.
IMHO, Fisto's inviso-cannon is likely DPS+30~60% over pure, but that's a wild guess. It's got enough extra dice via sneak+paranoia to double the Front number, but it takes a hit on DS & 10KS and it also has to be weighed against Pluck for those not interested in SD's debuffs (likely most).