Actually, I guess it was around six months ago that I changed it to be the other way. Not any plans to make overall changes to the starships that way. You can work around that by finding more crystal-rich planets, but it's specifically designed this way to prevent players from just spamming starships right at the start; and having starships (which are almost pure offense) and turrets (which are almost pure defense) occupy the same resource space compared to the fleet ships, which are all-purpose, is also something that was intentionally done.
That said, most newer starships that we are adding are more metal-heavy, to keep the variety increasing.