Well I have been watching Last Exile and I can't help but think about FFXIV having customizable personal Airships.
Airships have different models, each with their own stats. Each model has different parts such as engines, propulsion, ect and all change the appearance of the ship as well as the performance. All Airships run off of Ceruleum, which becomes a new commodity.
Parts can be crafted and or bought.
Every Saturday a tournament for airship racing will run all day. Winners go into a monthly "Grand Race" with all kinds of rewards and whatnot.
Racing will not be dependant on lag and rail-style movement. I'm looking at you chocobo racing.
Sorry, I thought it sounded cool.