- Tactics skill in Heroes 3.

in my opinion, Tactics are needed, **in most cases**...
Perhaps, it is incorrect to say that Tactics are **definitely** a more useful (or less useful) skill than others from the golden "set"...
In some cases (for example, when you need to quickly level up a spellcaster while having good buildings nearby, or you are more or less sure that your turn will be first, etc.), Tactics should be abandoned.
In general, all of this probably applies to all skills (the same Logistics, which is recommended before a Fortress battle, is less useful than at the beginning of the game...) - but this applies to Tactics primarily... that is, the usefulness (or uselessness) of Tactics depends (compared to other "useful" skills) on a larger number of external factors (priorities in the near and distant future, who and what you are playing against, the density of ranged units and units that can move across the battlefield in promising directions, where a Fortress battle is expected, etc.)
Something like that...