Sweet looking ruleset.
A few notes of construictive criticism:
1. Page numbers, and page references. In several places you reference other sections of the rules, but don't include a page number on where to find them. (see Tier) vs (Tier, Page 8). Think about the flow of when the reader has what information. You describe Starting Gear using ranges, but don't define them until two pages later, and don't include a reference where to find it. Personally I knew what "Close" meant, but you can't assume every reader will.
2. Treasure. The way you have the treasure rules broken up is extremely confusing. On page 10, you have a treasure header which immeditaly references a separate treasure section (with no page number). Once I dug up the other treasure section, half the information is reduntant with the first and the part that isn't 100% would have fit on page 10. If you just move the description of each Treasure tier to page 10, then you have the majority of your treasure information in one place that's much easier to reference. If you would prefer to keep it on page 16, then cut the section on page 10 and add the slots text to the section on page 16.
3. Tier. You have Tier dice, Gear Tier, and Armor Tier as related but separate concepts. I get what you're trying to do, but you're creating a worse version of D&D's Spell Level issue. For Armor Tier, I would recommend just calling it Armor. eg. "A PC with a Tier 2 armor and a Tier 1 Shield has 3 Armor". For Gear Tier, I would suggest calling it Quality. Having it named the same thing as a player's level strongly implies that they should match, which you specifically state isn't the case.