I do have a few more questions about the difference between skills and abilities. As I assumed that Racial Traits are inherent to the character, ie Elves are naturally in-tuned with Magic and generally are more athletic than normal humans. I've noticed other Character Sheets were some more average Racial Traits are treated as Skills rather than abilities.

Perhaps I could reword them to make them sound closer to Elven Racial Traits that High Elves are generally born with?

Similarly with Glyph Warding, I initially intended it to be liken to a skill but I figured it had more in common with Swordsmanship as both require something else for the Skill to be of use. A sword is needed to make use of the skill and known spells to the character are needed for the Glyphs/Runes to actually work. Sort of like making Magical Scrolls, as the Scrolls help facilitate the ability to cast spells.

For the Spell Barrier itself, I'll include that Iron Weapons are what it is meant to deflect and higher rated metals will significantly cut short the duration of the Barrier before it either collapses or the spell breaks.