Back in the day when beast wars came out I drew a picture of a Transformer who turns in to a Cassowary with a re-use of the G1 name Chase, and a Funnel Web Spider called Fangry.

Still even beasts have been done, I'd like to see more transformers infiltrating different time periods. So how about the Siege Masters? Led by Fortress Maximus who turns into a medieval castle?

His nemesis would be Decepticons who transform into a battering ram, seige tower, catapult and trebuchet.

They are both assisted by small armies of minicons who look like knights, men at arms and horses.

Actually I'd like to see more artillery Transformers in general. We've seen them in the fiction, but we've never seen any Transformers change into a cannon or howitzer that wasn't self propelled, or a space cannon.