Masterwork Items and 'The Gang' /Immersion

I have developed well, 'this table':

Details: [-I was inspired from Icewind Dale's uncommon "Fine" and even rarer "Finest" Qualities of 'Default Weapons'.]
I wanted more depth within the system of the items awarded to the player and more immersion into the game world. I want more instead of just having say 'Splintmail' and 'Platemail' throughout the beginning and mostly the middle of the adventure. I wanted say finding, Splintmail x1 in Candlekeep ["My old toes.."] and maybe Battered Platemail x2 and Fine Splintmail x1 in the Friendly Arm Inn, then maybe you can plunder ancient Masterwork Splintmail from Firewine Ruins and maybe find a Fine Platemail Armour Suit on a 'recently deceased' hot-headed 'would-be-assassin' noble from Amn, or Baldur's gate maybe even Cormyr ["I've got the best prices this side of Cormyr.."].

What do you, inquisitive and talkative adventurer say to this suggestion and or proposition?
(Also: ' { } ' Denotes Baldur's Gate: [/] Tales of the Sword Coast Specific Value Modifications [From my Advanced Dungeons and Dragons 2nd. Edition Source Material: http://www.legolas.org/items/armor.html (Accuracy?)].)
[Also: I have more 'rules' that I have developed in making this and other item quality tables ('currently' 'un-shown') if anyone is interested.. ya or na?]