Contest organization.

Perhaps it would make sense to choose the "best map of the era," meaning across all years.

It sounds like an epitaph, as if the time for "Heroes of Might and Magic V" has passed, rest in peace. It's better not to hold a contest with such a formulation. Besides, the final prize list will mainly feature maps from recent releases.
However, it would make sense to hold a contest for maps from 2015-2016. We need to stir up the Heroes of Might and Magic V forum a bit. In my opinion, there are very few good maps from the past couple of years, so we'll have to work with what we have.