Wanna increase resist on armor zos wants u to go either reinforced, nirn or impen.
You can swap out Glyphs, it's not like your committed to anything you enchant. Try the glyph, if it does not work for you, put back what you had before, or something different.
As for Armor, the would have to nerf the value to the point of you needing to use 2 to 3 armor slots because you could stack 7 of them. At current values you could pretty much eliminate any fire damage in the game with the way things are now.
And, finally, the game has to have some choices in it.