What kind of magic do you like the most?

In this case, we are talking about spells, not skills. We are comparing the compositions of schools, i.e., spells.

It seems to me that we are comparing magic as skills in terms of their development, but the question "which magic do you like more?" can also be interpreted as a comparison of spells. In the end, everyone is entitled to their own opinion.

only half of the racial abilities

Name at least one racial ability that cannot be attributed to neutral magic.

But still, all of this together is only a small part of the skill wheel.

At least half.

No, as spells. If it doesn't work, then add it to the hero's xdb file.

And at the same time, fill its skill slots with the skills that are necessary to obtain certain abilities-spells. That is, there is no practical benefit from this.