<Snipped quote by KoL>
I have lots of qualms because it makes no damn sense. Just because a skill CAN do something doesn't mean you HAVE to do it and turn chronology into a mess. Also you basically do directly invalidate my post by getting there first.
... and really, identifying Medusa because "she smells of snakes"? How many snake-related things are there in Greek myth? :P
But such a thought makes half of the Noble Phantasms and skills of the whole Fate series useless. It's pretty much like saying that you can't use Fragarach to counter someone after they launched their attack because this would invalidate their post. Or that a character with a ridiculous luck such as Artoria and Gilgamesh can't just break reality by breathing.
Aesthetics of the Last Spurt is something so situational that I had to spend the whole time of the previous iteration of this RP trying to find a way to put it to use. Don't throw a bucket of cold water on me just because it makes no sense, that's just how Fate is.
That said, if such a thing becomes a problem, I can easily edit it to Atalanta firing after Nero's arrival.
As for Medusa, I would find it even more of a stretch for Atalanta to not have a very good guess of who she's. Their legends are contemporaneous and Perseus' story was one of the most famous ones of the Classic Mythology. Furthermore, no matter how many snakes there are on Greece, once one is known for being a beautiful woman who lived in an island in the Aegean Sea.
It's just as bad as seeing a Greek Spider woman and not guessing that she's Arachne. Just makes no sense at all to me.