The release date of the expansion pack is approaching.

IMHO
The main advantages of TE:
1. Army transfer.
2. Balanced starting armies.
3. Mandatory presence of a second generator in the castle.
4. Replacement of scrolls, cartographers, and hill forts.
5. Normal hero specializations (no specialists in Eagle Eye, which is completely useless!!!)
6. Necro-patch and modified growth rate of some creatures (especially Phoenixes)

Disadvantages:
1. Creature experience.
2. Hero classes.
3. Spells are not in their usual places (although this is debatable; it might be for the better, but it's just not familiar).
4. Bank (I am strongly against it).