The issue of a tram (new or old) and some routes for it would be welcomed. There is a new tram simulator coming out via steam in October and I know DTG would better it!!! https://www.tram-sim.com/
Except, what if it were a tram-train. One does exist in Sheffield, England. Search it up, it is really interesting. For the OP: I absolutely agree that trams should make an appearance in TSW2 as it would be amazing to actually see the sights of your favourite city with a tram system eg: Köln etc...
Agreed Hamio. Many European and Worldwide cities still have trams running through their streets, Milan, Vienna, Lisbon, Melbourne, Sydney and San Francisco to name but a few!!!