1. Summoning Portal ... What stops the map maker from removing all dragon castles from the map?
2. Dendroids ... What stops the map maker from replacing them with monks, for example?
3. Golems, fairies, and other elementals ... Who is stopping the map maker from removing elemental castles and roaming squads of elementals and golems, as well as all sorts of slow "stompers"?
With this kind of map preparation (all roaming squads either shoot or fly with a speed of at least 7, preferably 9), some of the issues would be resolved, wouldn't they?
And now about the ballista.
There is a limited number of heroes with a starting ballista. Who stops someone from locking them in prisons and separating all these prisons from the rest of the landscape with mountains? Of course, a ballista can be bought in some castles, but that is also a matter of editing ...

Орден Феникса – харизматический :) лидер