Agreed - announcing a new coin and offering a trade-in period of only 3 days is very unfair.
FuelCoin devs are going to end up with nearly all of the coins to themselves - 50% premine plus 30-40% of the coins that will not be claimed because they only gave 3 days to do the trade-in.
You should really consider allowing at least a week or two for the FC2 trade-in.
We are going to set the period to 30 days so it gives more than enough time.