Ghey or not, there was no fashion motive behind the Big Eye dial design. Guess it's time for a short history lesson, for those who want it/need it//whatever.
Truth be told, the whole dial layout isn't any modern idea by Longines - the "big eye", i.e. an oversized minutes subdial, was around well before Longines made the watch that this one's a reissue of.
The original "big eye" chronographs were one of the versions of the Type XX and XXI chronographs - made by Breguet, Mathey-Tissot, Dodane, Airain and Auricoste - for the French air force.
The "big eye" thing was a simple means of enhancing the legibility of the minute register, I believe.
The only Longines alteration to an otherwise very Type XX dial is the 12h counter. Well, as seen in the pics later on, it's not even their idea to clutter it with one, Mathey-Tissot did that earlier.
Some original Big Eye chronographs (pics from the Internets):
Essentially, all of these can be attributed to Mathey-Tissot, who made them for Breguet, and sold a part of them under their own name. I'm not familiar with the "Big Eye" version being made by Airain, Dodane or Auricoste, so it must have been a Breguet and Mathey-Tissot thing only.
Can't blame Longines for making a reissue of their own version of the Big Eye. The Big Eye seems to be the most coveted version of the Type XX/XXI specification, and is far less common than the versions with a non-lumed, standard size minutes register.