Wow, what can I say, that's a breaking news.
I think Lion's Intercity could fit The Bus more, because there isn't some serious Solo bus at the beginning of release, it is more close to a citybus. And the length of them are more than 12m. To acquire the road in TBS, we need a bus that length under 10m. So that the minibus would be the best fit for TBS I think.
And I think once The Bus is released, you would add more stadtbuses to the pipeline as well.