The tram network tier (G class not in it yet)
I put G class on S but I say that Z1/Z2 trams are overrated especially if we are looking back at the past before they even retired and ceased. But as of today I think A1/A2 class, A class trams in general are overrated and bottom tier. SO that is my opinion, D1 and D2 class trams are not bad!
