MisterKurtz said:If you conquered all of Germany by the time the Frankfurt assembly fired, you could become Germany without a leadership war.
If all the German states, including Prussia, are Mon or ConMon in early 1851, Conservative Empire will fire, which will produce a leadership war with Austria.
If all the German states are Democracies, including Prussia, Popular Unification will fire. I don't think there is a leadership war for that.
If the German states are mixed in government styles, I think you'd have to wait till the Franco-Prussian war to turn Prussia into Germany.
So Basically now you should make sure nobody changes to Democracies and you'll be Germany in 1851? Shouldn't be too hard then.