Adding goods is planned, but only a column of all goods, no matter the era. How much goods of a certain era are worth can be a long discussion. Some guilds are trading 1:2 over 1 era, but there are also other players that only want the lower era goods because they get tons of current goods with recurring quests and cant trade them down in those numbers.
If there is indeed a building that produces high numbers of lower goods and is collected every day with the galaxy it would be wise to use an upgrade kit on it.