Please Critique this build

[Xyzima]

Right i got bored. and made a Heavy Repeater character based on Artificer Inightful strikes spell and Rogue Mechanic 1.

Character Plan by DDO Character Planner Version 03.12.01
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Level 20 Lawful Good Drow Male
(1 Fighter \ 13 Rogue \ 6 Artificer) 
Hit Points: 288
Spell Points: 395 
BAB: 14\14\19\24
Fortitude: 11
Reflex: 14
Will: 9

                  Starting          Feat/Enhancement
Abilities        Base Stats          Modified Stats
(28 Point)       (Level 1)             (Level 20)
Strength              8                    10
Dexterity            14                    18
Constitution         14                    16
Intelligence         18                    28
Wisdom                8                    10
Charisma             14                    16

Tomes Used
+1 Tome of Intelligence used at level 3
+2 Tome of Intelligence used at level 7
+2 Tome of Strength used at level 20
+3 Tome of Dexterity used at level 20
+2 Tome of Constitution used at level 20
+3 Tome of Intelligence used at level 20
+2 Tome of Wisdom used at level 20
+2 Tome of Charisma used at level 20

                  Starting          Feat/Enhancement
                 Base Skills         Modified Skills
Skills           (Level 1)            (Level 20)
Balance               6                    27
Bluff                 6                    25
Concentration         2                     3
Diplomacy             6                    26
Disable Device        8                    43
Haggle                6                    26
Heal                 -1                     0
Hide                  2                     4
Intimidate            2                     3
Jump                  3                    23
Listen                3                    25
Move Silently         2                     4
Open Lock             6                    34
Perform               n/a                   n/a
Repair                4                    13
Search                8                    45
Spot                  3                    29
Swim                 -1                     0
Tumble                6                    27
Use Magic Device      6                    27

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


Level 2 (Artificer)


Level 3 (Rogue)
Feat: (Selected) Toughness


Level 4 (Artificer)
Ability Raise: INT


Level 5 (Rogue)


Level 6 (Artificer)
Feat: (Selected) Precise Shot


Level 7 (Rogue)


Level 8 (Artificer)
Ability Raise: INT
Feat: (Artificer Bonus) Weapon Focus: Ranged Weapons


Level 9 (Rogue)
Feat: (Selected) Rapid Shot


Level 10 (Artificer)


Level 11 (Rogue)


Level 12 (Artificer)
Ability Raise: INT
Feat: (Selected) Skill Focus: Search


Level 13 (Rogue)


Level 14 (Rogue)


Level 15 (Rogue)
Feat: (Selected) Skill Focus: Disable Device


Level 16 (Rogue)
Ability Raise: INT
Feat: (Rogue Bonus) Improved Evasion


Level 17 (Rogue)


Level 18 (Fighter)
Feat: (Fighter Bonus) Improved Critical: Ranged Weapons
Feat: (Selected) Toughness


Level 19 (Rogue)


Level 20 (Rogue)
Ability Raise: INT
Feat: (Rogue Bonus) Crippling Strike
Enhancement: Artificer Damage Boost I
Enhancement: Artificer Damage Boost II
Enhancement: Rogue Skill Boost I
Enhancement: Rogue Skill Boost II
Enhancement: Rogue Skill Boost III
Enhancement: Rogue Skill Boost IV
Enhancement: Artificer Crossbow Attack I
Enhancement: Artificer Crossbow Damage I
Enhancement: Artificer Improved Rune Arm Use I
Enhancement: Artificer Improved Rune Arm Use II
Enhancement: Artificer Battle Engineer I
Enhancement: Artificer Rune Arm Overcharge I
Enhancement: Rogue Fire Trap Lore I
Enhancement: Fighter Critical Accuracy I
Enhancement: Racial Toughness I
Enhancement: Racial Toughness II
Enhancement: Rogue Mechanic I
Enhancement: Rogue Mechanic II
Enhancement: Rogue Sneak Attack Accuracy I
Enhancement: Rogue Sneak Attack Accuracy II
Enhancement: Rogue Sneak Attack Accuracy III
Enhancement: Rogue Sneak Attack Training I
Enhancement: Rogue Sneak Attack Training II
Enhancement: Rogue Sneak Attack Training III
Enhancement: Rogue Sneak Attack Training IV
Enhancement: Improved Disable Device I
Enhancement: Improved Disable Device II
Enhancement: Improved Disable Device III
Enhancement: Improved Disable Device IV
Enhancement: Improved Open Lock I
Enhancement: Improved Open Lock II
Enhancement: Improved Open Lock III
Enhancement: Improved Search I
Enhancement: Improved Search II
Enhancement: Improved Search III
Enhancement: Improved Search IV
Enhancement: Improved Use Magic Device I
Enhancement: Rogue Dexterity I
Enhancement: Artificer Intelligence I
Enhancement: Artificer Intelligence II
Enhancement: Fighter Toughness I
Enhancement: Rogue Improved Trap Sense I
Enhancement: Rogue Improved Trap Sense II
Enhancement: Rogue Wand and Scroll Mastery I
Enhancement: Rogue Wand and Scroll Mastery II

[wax_on_wax_off]

The damage mods don't stack and it is too easy to use dexterity for your attack stat at level 20. The big issue is that at level 20 up to 50% of your DPS comes from rune arm damage which scales dramatically as you level. For this reason a pure or almost pure artificer is really the only way to go. A pure mechanic can maybe come close in 0% fort situations but it totally loses out in every other way and still might not be in front on DPS.