Dropping Flashing Steel?

Now that I've picked up my tier 9 attack on my Katana/Fire, it seems that with a little recharge I won't need all the attacks that I have. Would it be foolish to drop Flashing Steel? Will I be sorry? Am I assuming too much about recharge (without Hasten)? Would it be too costly to give up a potential slot to the Achilles' Heel proc?

The toon in question plays on an all scrapper team (thus the Maneuvers and Tactics), and I'm not worried about gapless single target chains. The current build is below. I'm fairly eager to cram in the rest of /Fiery Aura sans Temperature Protection, and Vengeance, too, with maybe Caltrops to keep things in Burn.

(I've never used Burn--it isn't a targeted drop, is it?)

A few things I aim to fix and add to the build:
Higher level IOs to cap damage.

Achilles procs in Flashing Steel (if not dropped) and/or Lotus Drops.

Replacing one of the frankenslotted AoEs with five Scirocco's.

Crushing Impact Acc/Dmg into Divine Avalanche and probably replace the GotA triple with a straight up defense or a GotA +run speed.

Hero Plan by Mids' Hero Designer 1.401
http://www.cohplanner.com/

Click this DataLink to open the build!

Jungle lvling at 30: Level 36 Science Scrapper
Primary Power Set: Katana
Secondary Power Set: Fiery Aura
Power Pool: Leaping
Power Pool: Fitness
Power Pool: Leadership

Hero Profile:
Level 1: Gambler's Cut -- Mako-Acc/Dmg:36(A), Mako-Dmg/EndRdx:36(3), Mako-Dmg/Rchg:36(7), Mako-Acc/EndRdx/Rchg:36(13), Mako-Acc/Dmg/EndRdx/Rchg:36(21), Mako-Dam%:34(29)
Level 1: Fire Shield -- S'fstPrt-ResDam/Def+:13(A), Aegis-ResDam/EndRdx:34(9), S'fstPrt-ResKB:30(9), Aegis-ResDam:34(15), Aegis-ResDam/EndRdx/Rchg:30(25)
Level 2: Flashing Steel -- Erad-Dmg:30(A), Erad-Acc/Rchg:30(3), Erad-Acc/Dmg/Rchg:30(7), M'Strk-Acc/Dmg/EndRdx:30(13), M'Strk-Dmg/EndRdx/Rchg:30(19)
Level 4: Healing Flames -- Tr'ge-Heal/Rchg:30(A), Heal-I:35(5), H'zdH-Heal/Rchg:35(5), H'zdH-Heal/EndRdx/Rchg:35(15)
Level 6: Combat Jumping -- Zephyr-Travel:25(A), Zephyr-Travel/EndRdx:25(31), Zephyr-ResKB:25(33)
Level 8: Divine Avalanche -- C'ngImp-Acc/Dmg/Rchg:35(A), C'ngImp-Dmg/EndRdx/Rchg:36(11), C'ngImp-Dmg/Rchg:34(19), C'ngImp-Acc/Dmg/EndRdx:35(25), GftotA-Def/EndRdx/Rchg:34(33)
Level 10: Build Up -- RechRdx-I:30(A), RechRdx-I:30(11)
Level 12: Swift -- Run-I:35(A)
Level 14: Maneuvers -- EndRdx-I:30(A)
Level 16: Plasma Shield -- Aegis-ResDam/EndRdx:32(A), Aegis-ResDam/EndRdx/Rchg:32(17), Aegis-ResDam:32(17)
Level 18: Hurdle -- Jump-I:30(A)
Level 20: Stamina -- P'Shift-EndMod:36(A), P'Shift-End%:30(21)
Level 22: The Lotus Drops -- Erad-Dmg:30(A), Erad-Dmg/Rchg:30(23), Erad-Acc/Dmg/Rchg:30(23), M'Strk-Acc/Dmg/EndRdx:36(34), M'Strk-Dmg/EndRdx/Rchg:36(34)
Level 24: Super Jump -- Zephyr-Travel:25(A), Zephyr-Travel/EndRdx:25(33)
Level 26: Soaring Dragon -- Mako-Acc/Dmg/EndRdx/Rchg:36(A), Mako-Acc/Dmg:36(27), Mako-Dmg/EndRdx:36(27), Mako-Dmg/Rchg:36(29), Mako-Acc/EndRdx/Rchg:36(31), Mako-Dam%:36(31)
Level 28: Consume -- RechRdx-I:35(A), Erad-Acc/Rchg:30(34)
Level 30: Blazing Aura -- EndRdx-I:35(A), M'Strk-Acc/EndRdx:36(36), M'Strk-Dmg/EndRdx/Rchg:36(36)
Level 32: Tactics -- EndRdx-I:35(A)
Level 35: Golden Dragonfly -- Sciroc-Acc/Dmg:38(A), Sciroc-Acc/Rchg:39(36)
Level 38: [Empty]
Level 41: [Empty]
Level 44: [Empty]
Level 47: [Empty]
Level 49: [Empty]
------------
Level 1: Brawl -- Empty(A)
Level 1: Sprint -- Empty(A)
Level 2: Rest -- Empty(A)
Level 1: Critical Hit

Gamblers Cut should be where the achilles Proc goes since it is your most used attack

Dropping Flashing is not a big deal; I did it many moons ago on a build and I came to miss it when I had the chance to do alot of aoe stuff but it did not hamper me in any way or slow me down

I dropped flashing steel and never really looked back...I use energy torrent as an opener and as my cone attack while in the middle of the fight. Either way flashing isn't likly to be missed all that much, especially if you get a higher recharge build.