So I noticed after making a speed build, that it doesn’t seem to be affected by +damage abilities. So I think that also means that +damage is only affected by Attack, and only on direct attacks. Speed has very few buffs, so even as a Nature mage with the Speed skill maxed out, a nether maxed out in Speed, and a Blur spell can’t keep up with the exponential growth of the levels. It does already have a hard counter in the sapphire paragon, as well.
Is there a chance that speed could be affected by +damage items on a direct attack as well? I think that would make it a nice potential alternative to the attack stat. It is nice that it already goes through armor. But it falls off in effectiveness later, and there’s really nothing you can do about it. At that point, it neither lets you go first or lets you do enough damage to be worth it.