Aloha,
So something that some may not know is the level of data that we look at when releasing ships, especially premium or "special" ships.
One of the things we did for Hayate is first to ask the community what you'd like to the purchase currency to be for this ship. After these results were found, that the community wanted FXP as the currency for this ship we had to look holistically at the average player, how much FXP they have in order to not necessarily inundate the pool of DD's being played to be full of Hayates and set the cost in accordance with what we felt is/was appropriate.
Though you may not feel that 2 million FXP is appropriate, with you being able to mount every single economic signal if you want, you can accumulate FXP pretty fast. I am sure there are a lot of players that didn't need to convert XP to FXP due to this, in order to purchase her.
In the past we have had feedback from the community that they have so much FXP built up that they needed something to spend it on, so this is another option to do so.
Mahalo,
-Hapa