A suggestion for the Fleet Arena store

Include each stock change a random ship that can only be farmed (and do not appear in the rest of the stores) at the same price of 400 fleet currencies for 4 fragments. This ship will change every time the store does it, as it rotates randomly it does not mean more than a little help in the farming of ships and it will give more meaning to this store once you have the rest of what appears in it or just buy zetas.