Also, with tramlines, most trams in the real world will go along their route, stop at the end, and come back - exactly like the metro - I would prefer trams to operate in that manner, without needing a little loop at each end. (I'm sure people will disagree with me on this though).
In Rome for example, we have both: here, the tram (8 line) ends without a loop
http://goo.gl/maps/2dLvj
here instead, it has a loop (5, 14 lines):
http://goo.gl/maps/UAiYq (you can't see it so clearly because the loop is quite big and the pictures are old, today is placed elsewhere).
So I think that it would be nice to have both options, maybe with a penalization for reverse (more time requested to reverse and/or only some kind of trams can reverse).
Anyway, other thing I would like to see in CiM2:
1 - About depots:
I agree that as they are now, depots won't work well: in my opinion, buses should go out of depots when it's the scheduled time, make as many route as they can, then go to the depot for manteinance when it comes the night, or when the schedule say so. This way we can make circular lines, if needed.
Or another way to solve this issue can be making the depot itself as a stop, even if this is pretty unrealistic.
2 - Get the first!
CiMs will take at a stop (bus, tram or w/e) the first vehicle that will go where they want to go, maybe with some limitations about the vehicle attractiveness (for example, if there is a businessman waiting on a bus stop, probably he will rather wait for a "luxury" bus then taking an old bus, even if it comes first, but this is an addition unnecessary in my opinion). This way we can combine express/regular lines on the same stop, as we have in Rome for buses, or as in New York for metros. This would be a great improvement from Cim1, where the ex/reg lines won't work well nor realistic.
3 - Take over
Buses should be able to take over other vehicles (cars, buses trams) if those are slower, or on a stop. This is really linked with point 2, which can't work without the ability of taking over: no use of an express line if it get stuck by regular, slower lines.
4 - Stop/stations upgrades
A nice addition would be the possibility to upgrade already existing stop/stations, to accomodate different needings, such as a new line nearby or an increase in number of passengers.
A few examples: I have a tram stop, via an upgrade I can make it a bus stop too, or I can add more space for passengers waiting and so on. Or in a metro station we can really have a thousand of possibilities, like underground passes to connect nearby stations, additional entrances/exit that could link the station with other point of attractiones, or other kind of stops.
5 - More transport types in the same time
Im some of the guys who bought nearly every DLCs that Paradox made for CiM: but a thing that frustrated me was that the additional transport types couldn't be added without the sacrifice of another type: why can't we have monorail and tram in the same map? Or why not trolleybuses and trams? Leaving us more possibility for building different kind of transportation in the same map, would make the game surely more fun.
6 - MODS
Another thing that keeped me playing CiM, and so buying DLCs, was mod support. It can add more possibilities for players (for example, I liked the realistic mod, with real world name and capacity for vehicles), with little modifications or new vehicles and maps, for examples. And this didn't stop me buying extra content, so what I want to say is that mods aren't incompatibles with your company's profit, in my opinion
