Have you ever considered a variant on your Meteor Shower 2 build where you go T5 Harper instead of T5 Mechanic?
If you solo a lot or often draw agro, my thought is you may wind up proc'ing much more sneak attack damage in the long run by going Harper.
Here are some thoughts on Mechanic vs. Harper on some key attributes...
- The difference between Mechanic-Harper in ranged power is slight (20 RP in Mech vs. 18 RP in Harper)
- You lose 10% standing Doubleshot by going Harper, but if you are running 10k stars w/38-low 40s WIS, on average the DS still comes out ahead
- DEX is two higher with Harper
- You lose 10m SA and point blank shot range going to Harpers (I've not found this to be that big of a deal – I find it easy to stay a bit closer)
- You lose some base damage enhancement per hit moving from Mechanic (7 pts) to Harper (2 pts or 4pts vs. evil)
- You lose Know the Angles if you go Mechanic unless you drop something else (e.g. venomed blades, sting of ninja - both of which I can take when i go T5 harper).
Based on the comparison above and other goodies (e.g., Wrack Construct), I might give the T5 Mechanic investment the nod, however, rogue-based thrower builds seem to largely be spec'd around SA damage. Thus, actually being able to proc the SA damage as often as possible becomes important. Within Harper there is T5 option to add Improved Deception to your equipped weapon.
Under the assumption that the Improved Deception on your weapon stacks with any Improved Deception item you might have equipped (e.g., Backstabber's Gloves), that would be 20% Improved Deception with T5 Harpers. You'd effectively lose half of this by going T5 Mechanic instead of T5 Harper (no TF shuri have Improved Deception that I know of, so I think Harper is the only way to get standing 20% ID on a shuri build). If you solo a lot, or draw a lot of aggro, this seems like a massive loss to SA damage over time as it would proc half as often running in Mechanic compared to Harper.
I've been playing your Meteor Shower 2 build for about a year - it has been great fun (so thanks!). I made the switch from T5 EK to T5 Harpers a while ago (now scrolling Tensor's), and also experimented with going T5 Mechanic vs. T5 Harper. The base damage and SA numbers I was seeing when I went T5 Mechanic were a bit higher then when I run T5 Harper (e.g., 5-10% higher), but the extent to which SA damage actually popped up seemed noticeably less in Mechanic compared to when I was running Harper with Improved Deception taken at T5. Thus, in the long run, I seemed to be getting much more SA damage from Harper when you factor in the increase in # of times it is proc'ing over a fixed period of time. In addition to providing that benefit, deception effects also cause mobs to temporarily stop and turnaround - quite useful for slowing mobs down when you are backpedaling and chucking. Thus, the more frequently deception procs, the more time you have to cut mobs down before they reach you.
As an aside, I've only got one Epic PL Doubleshot. In terms of my AP distribution, I've got 35 in Harper, 17 in Halfling, 8 in Assassin (1SA + Venomed Blades), 16 Ninja Spy (3x SA + Sting of the Ninja), 3 in Mechanic (one core for increased SA and PB range, 1 T1 for damage enhancement), and 1 in Shintao (positive healing amp).
In my build above, twist in Cocoon for healing, Enlightenment to help support 10K stars, my last twist is Whirling Wrists (if in LD or SD) or Grim Precision (if in Shiradi).
In light of your post, I am toying with the idea of switching out the 5Wiz for 1 level of Rogue (imp evasion or opp) + 4 levels of ranger, thus giving me a 10Rog/6Mnk/4Rgr split. I'd keep my enhancements largely the same as above but likely swap the 8 AP in Assassin for 6 AP in DWS (3SA + increased range for SA/PB). From there, I'd possibly drop the 3 AP in mechanic and 1 AP in shinao, and using the 2 AP I gain from dropping Assassin, put 6 in Arcane Archer to pick up some spell points for cocoon and a basic elemental imbue.
Thanks for all of your work on the thrower threads - I've found it very helpful.