5ft square and 1.5m square is practically the same. And there can be more than 1 person in such a square, but not fight there... but I would be good with 1m squares. You had to squeeze a little bit more and you would need 3 square ob top if each other to stand upright and swing your slashing and impact weapons freely. 1m squares are quite small to fight in with bigger weapons but i could accept that for easier calculations.
I'm kind of bothered by the Spanish version being made in Europe. German and Polish make a lot of sense, but the biggest group of Spanish speakers is in the Americas not in Spain itself. This bothers me for two reasons:
It will be priced in Euros, which means 10 to 20% higher cover prices. At that point it will always be cheaper to get the English books.
It will be full of colloquialisms and informal language endemic to Spain. There is a reason why we usually have different versions of movies and books in different sides of the pond. Spanish translators tend to play quite fast and lose with the language and many times overtranslate or mistranslate. Which can be quite distracting.
Honestly I would have preferred that they contacted an Argentinian publisher instead.