Basically, I think customization needs to be reduced if anything, at least for armor.

The magical trinkets- those should be kept.. 

However, armor should be bought as suits & shields , not so much individual pieces.

Simply do padded, leather, chain, scale, plate.  Then enhancements on each.

As for weaponry: I'd like to see that changed too

Currting tech can make swords.

Sword tech can make different types of swords.

Spear tech for Spears.

some weapons would add abilities to troops.  A glaive would give a unit cavalry foe

A battleaxe could give shield cleave (halves defense on shields)

These abilities would be dependent on unit's exp level.   Cavalry  foe with a green troop might be +1 DEF, but on an elite it might be +10 DEF.

etc.