I suppose it was mostly dumb luck but I got a lot of daily blueprint drops for the Yoh HT line, enough to unlock the Tier 6, 7 and 8 for free.
Since this happened, I want to know more about the Tier 9. Is it any good?
Also, from Tier 8 onwards the Yoh tanks get the option of using a small caliber or large caliber gun. On paper the only advantage of the large caliber gun is the higher alpha per shot, is the small caliber gun the better option?