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Another advantage of TE is that it can be downgraded to SOD :) since most of the new features are optional.
What can and should be disabled:
1. Hero classes
2. Creature experience and taxes
3. Chess clocks
4. Ban on spells of viewing and clairvoyance.
5. Modified hero skills.
What is better to leave:
1. Replacing scrolls with piles of gold.
2. Replacing cartographers with veils of darkness.
3. Replacing hill forts with magical forests.
4. Bank
5. Choice of neutral city types (goodbye to familiar secondary cities)
6. Ban on seafaring spells and artifacts.
7. Ban on the Angel Wings artifact.
8. Limitation on DD and Hit-and-Run.
9. Built-up dwellings of the second level at the start.
10. Advanced witch huts.
Moving spells across magic levels and books is fixed in another way; I'm still figuring out how.
These are the main points; if I forgot anything, I'll add it later.