Hi there, I'm back with a build and a video, due to popular request.

If you're not into lots of build reading, I'll provide the video link to start:

The Battle Engineer Mechanic plays very differently from a Fury of the Wild Arcane Monk Archer, because rather than looking for heavy burst damage, the BEM elects to lay down barrages of crowd control fire and sustained damage.

Where the FotW Monkcher is a sniper, the BEM is a machine gunner with paralyzing rounds. This gives the BEM a dps advantage over the Monkcher in a longer fight, making each of them effective for different situations. The BEM excels in Epic Elite content, adding unresistable crowd control with Shiradi that makes Epic Elite quests feel smooth and effortless.

Where a geared FotW Monkcher can drop a non raid boss redname Epic Elite target in 10 seconds or less, the Shiradi Mechanic makes short work of all the other mobs in a dungeon, with near impunity.

The Shiradi BEM works off a few basic concepts:
Mechanic lets you apply your int bonus to your crossbow damage
Artificer lets you use Insightful Strikes + an element of your choice
Full Improved Evasion and Improved Uncanny Dodge
Improved Deception and a maxed Bluff make laying down heavy SA damage easy
UMD allows for self healing and group support
Great trapping ability for group utility
Insane Diplomacy for shedding aggro
Runearms for mob-specific DPS choices

Basic Build Info:

Halfling 13 Rogue/7 Artificer
(I enjoy Halfling for the save bonuses and flavor, optimizers may prefer Half-Elf)
Str 6
Dex 18
Con 14
Int 24
Wis 8
Cha 8

Level 1 (Rogue)
Feat: (Selected) Point Blank Shot

Level 2 (Rogue)

Level 3 (Rogue)
Feat: (Selected) Rapid Shot

Level 4 (Rogue)

Level 5 (Rogue)

Level 6 (Rogue)
Feat: (Selected) Insightful Reflexes

Level 7 (Artificer)

Level 8 (Artificer)

Level 9 (Artificer)
Feat: (Selected) Precision

Level 10 (Artificer)
Feat: (Artificer Bonus) Precise Shot

Level 11 (Artificer)

Level 12 (Artificer)
Feat: (Selected) Improved Critical: Ranged Weapons

Level 13 (Rogue)

Level 14 (Rogue)

Level 15 (Rogue)
Feat: (Selected) Toughness

Level 16 (Rogue)
Feat: (Rogue Bonus) Improved Evasion

Level 17 (Rogue)

Level 18 (Rogue)
Feat: (Selected) Improved Precise Shot

Level 19 (Rogue)
Feat: (Rogue Bonus) Opportunist

Level 20 (Artificer)

Level 21 (Epic)
Feat: (Selected) Improved Sneak Attack

Level 22 (Epic)

Level 23 (Epic)

Level 24 (Epic)
Feat: (Selected) Combat Archery

Artificer Damage Boost I
Artificer Damage Boost II
Rogue Skill Boost I
Rogue Skill Boost II
Artificer Crossbow Attack I
Artificer Crossbow Damage I
Artificer Improved Runearm Use I
Artificer Improved Runearm Use II
Artificer Battle Engineer I
Rogue Sonic Trap Lore I
Halfling Cunning I
Halfling Cunning II
Halfling Guile I
Halfling Guile II
Halfling Luck I (Fortitude)
Halfling Luck I (Reflex)
Halfling Luck II (Reflex)
Halfling Luck III (Reflex)
Halfling Luck I (Will)
Racial Toughness I
Racial Toughness II
Rogue Faster Sneaking I
Rogue Faster Sneaking II
Rogue Mechanic I
Rogue Mechanic II
Rogue Sneak Attack Training I
Rogue Sneak Attack Training II
Rogue Sneak Attack Training III
Rogue Sneak Attack Training IV
Improved Disable Device I
Improved Disable Device II
Improved Disable Device III
Improved Open Lock I
Improved Open Lock II
Improved Open Lock III
Improved Spot I
Improved Spot II
Improved Spot III
Improved Spot IV
Force Manipulation I
Artificer Intelligence I
Artificer Intelligence II
Rogue Improved Trap Sense I
Rogue Improved Trap Sense II
Rogue Wand and Scroll Mastery I
Rogue Wand and Scroll Mastery II

Let me know what you think. I really enjoy fine tuning these builds. It's what makes DDO fun.