Now why would you want those? I suppose you have only peaceful intentions for that heavy cav - like plowing your fields.
GPS
Watch it, Calis. If I see your cavalry ploughing fields near Rome, there'll be trouble.
Well, I like having some fun with you guys , but actually nobody answered the initial question.
Is it a fact that the Goths (and other minor tribes) can't build Heavy Cav, although all prerequisites are fulfilled (tech, horses)?