Hey I enjoy your work a lot.
One thing was frustrating though and I would appreciate an improvement. It was unclear to me that exalting only multiplies the current stats so its bad to exalt before using your radiant embers. This was unclear and led to frustration, so I would recommend to make it so that adding radiant embers before or after exalting does not change the final stats of your item. I believe this to be a more elegant way of handling this system.
For me much of the endgame loop revolves aroud optimizing your build and grinding and grinding until you get the strongest possible rolls on exalting the item. I did farm and invest a lot of time, exalting an item mutliple times, then disenchanting and exalting again to hit the more desired enchantments on an item only to find out that after all this time the item is much weaker because I did not use my radiant embers before exalting. Feels bad.
Thanks for reading and I hope you consider my input.