If it's not too much trouble, show me what you think is worse about it.

It will definitely be difficult to show :)
I can describe a couple of points:
1. The factions are very strongly divided in terms of development... as a result, there is a greater dependence of the army on the hero and vice versa... for example, the point of making a "non-native" hero strong is lost.
2. More complex calculations of magical action - slightly off-putting.
3. ATB scale - a great idea, but not for everyone (see point 2)
P.S. In general, it seems to me that the balance in the 5th game depends more on luck than on skill, although I haven't played it much yet, so I might change my opinion :)