That's not something that is ever presented in the books. It's an interesting idea for worldbuilding, but not supported by the rules.
Yes it does. 3.5 DMG page 147, "Inner Planes: These six planes are manifestations of the basic building blocks of the universe."
From the 1e Manual of the Planes, "The outer planes are also called the Planes of Power since they are the homes of the most powerful extraplanar beings in the known planes of existence.
They have a mixture of elements that supports a rich diversity of life."
From the 2e DMG, "Using the sphere analogy, outside of the Primes and the Ethereal planes are the inner planes, the primary building forces of the multiverse."
From 2e Planescape, "Eighteen, not four, is the correct number of Inner Planes to be found.
These are the building blocks of all matter."
From the 3.5 Manual of the Planes, "Inner Planes: Also called planes of power, these realities are incarnations of the basic building blocks of the universe." and "Within the D&D cosmology, the Inner Planes consist of four Elemental Planes (Earth, Air, Fire, and Water) and
two Energy Planes (Positive, the moving spirit of all life, and Negative, the force of decay and entropy)."
I just did. They either are part of a domain or literally affect people/things based on alignment. Magics Circles hedge aligned creatures, the utterance spells hurt everyone not of an alignment. They interact with the target's alignment.
Except Death Watch. Deathwatch is drunk.
I don't understand how you can think that it isn't evil to use spells that are literally evil.
Really pushing the 'good' in all senses of the word.
Not really. Food is good for you, unless you eat too much and become overweight or your stomach bursts. Water is good for you, unless you drink too much and die from it. "Too much of a good thing" does not in any way take away from the goodness of whatever it is, if taken in moderation.
In Dragonlance, being too good wraps around into persecution and authoritarianism somehow to the point that the Good thing for the gods to do is annihilate every man, woman and child living in the same city as the one 'too good' guy and ending society.
Gotcha. Yeah, the reasoning behind the Cataclysm always bothered me.