There are nodes in some skills that change their tags. They are not indicated, and it's pretty-much guesswork. I would love to have a special border for nodes which will alter the tags of the skill they apply to.
For instance, I would love to have a special border on the Fireball node that provides lightning damage as it adds the Lightning tag to the spell. Or to the Wandering Spirits node that changes their damage to poison.
Just having these more visible at a glance would make it easier to see what fundamental changes you can make to skills while considering what to go for.
Just making the hexagonal border on those skills be thicker or a different color would be enough to differentiate them.
This is especially relevant for ones like the Fireball one, or the Flame Reave one (Rolling Thunder) as both are indicated as "small nodes" on the skill tree which makes them seem like just a stat boost rather than something transformative.
TL;DR: make it visually obvious which skills fundamentally change the tags of a skill please.
External link →