The Flight of Crowe originally started as nothing more than a little background story for Crowe, a character I submitted for 'Dragonball NK' a fanfic which I previously believed to be dieing, but in reality it's al the way up to chapter 22 now (a link to the forum that has all of them is this)
Crowe, one of two entries, was however not accepted. So then I had a character with a very short but, in my opinion, very promising history which I decided to expand upon, and so FotC was born. Besides telling the story of Crowe, FoC also delves into certain other aspects of The DB/DBz universe, like the Planettraders, other changelings ('non-icers') and the other galaxies (DBZ = North Galaxy, FotC = East + South Galaxy, recovered from Brolly)
Here's a list of things that are more or less special about FoC (though other Fanfics also have some these things):
Youcmou-jin:
One thing that sets FotC apart from most DBZ fanfics is the fact that it's main character (Crowe) is not a Saiya-jin, but rather a Youcmou-jin. The Youcmou-jin are a new race I myself made up. The name stems from the Japanese words 'Moucyou' (bird) and Jin (people) however I jumbled the syllables of Moucyou much the same way Akira Torijama jumble Yasai (vegetable) and Furutsu (fruit) to make Saiya and Tsufuru.
Youcmou-jin have hollow bones, nails like the ends of bird's claws, feet with three toes (two in front and one in the back, pressed against the heels so they can still wear 'normal' boots), sharp teeth (no fangs), hawk-like noses (not actual beaks, it's a type of nose). Most are covered in tribal-style tattoos.
Youcmou-jin are very fast and very powerful Ki-users, however they are physically weak. In other words: A Youcmou-jin of PL 1,000,000 hits with approximately the same strength as Mister Satan, however a Youcmou-jin of PL 100 could pull off a Ki-blast of the same strength as Goku at PL 5,000 and has the same speed.
Youchushi-jin:
This is basically the Youcmou-jin equivalent of SSJ, however there are also several significant differences. Youchushi-jin (Hushicyou = phoenix bird) have completely blue flames in their eye sockets (their eyes are literally on fire, like the eyes of a Starcraft Archon), their hair burns with a yellow and orange flame, their talons (finger nails) grow longer and they get fangs. Despite the large amount of fire involved in this form, the Youchushi-jin does not burn up (yet (higher forms do run this risk)), also the fire cannot be put out by water.
'GT never happened':
Like many DBZ fanfics, this fanfic ignores anything that happened in DBGT, including SSJ4, Golden Oozaru, the Black Star DBs and Bebi.
Elements:
In DBZ some of the races are very obviously linked to elements (Sayia-jins and humans are linked to the Element of earth (and SSJs are additionally linked to Lightning); Nameks are linked to water (which has healing and magic powers in Japanese/Buddhist mythology); Freeza's race, the Icer changelings, are linked to Ice, etc…). FotC expands on this.
Emotions and other deep stuff:
DBZ as an anime was not exactly deep, but there was a good deal of dept in the ways Vegeta and Piccolo (and Buu) went from bad to good and in the way that people such as Gohan, Goten and Trunks have to deal with the loss of family members and other loved ones.
In FotC I try to stick to this, by not delving too much into emotions, but I won't ignore them either. Goku, for instance, will not proclaim his eternal love for Vegeta (see 'Never without you' a very good fanfic in which this does happen, I don't mind other people writing it that way, but I quite literally can't).