Metro headaches
The rest of the game seems fine, although there were a couple of visual glitches with tram tracks not connecting at intersections, and trees becoming blocks of brown at far distances despite being on "High" settings.
Biggest peeves right now are the UI and the awful metro construction. The street grid blocks everything, and for some reason when you click on the metro tracks, you get the traffic density, but not the depth of the tracks, which would be quite helpful.
The cursor snapping to tracks in construction mode is also pretty annoying to work around, but you can learn to get around it easily (or at least fumble around to death in sandbox mode with unlimited cash).
The curving function, when building junctions, can sometimes cause tracks to "unsnap" from the merging tracks, and then you have to start all over again.
Biggest peeve, however, is depots. In the city with the ring highway around the bay and islands, I built a giant ring line and two lines snaking off of it. These very quickly became overcrowded, and with 30 minute headways all day and night, and 15 minute headways during the peak, one line needed 19 trains, and the other needed 31. However, I was allowed to purchase 31 trains, so I thought all was well. It was not so.
My metro system closed at 3-5AM. Upon arrival at the depot, there were still about 10 trains in the biggest-size metro. However, they couldn't get in because "they couldn't fit", despite the fact that they had all somehow managed to fit before. I built three additional depots, but for some reason reassigning individual trains to other depots didn't work, and neither did adding more than two depots.
Another thing - if your metro line is especially long, you do not want to do the "loop and then depot" circuit thing that doesn't treat the depot as a stop. I had a train go around because it thought it was going to make it, and then it broke down at the other terminal, deep in the city center. It never really got back up and working again, so basically there were about 20 trains in a giant jam behind it. In addition, because the tracks no longer have crossovers, it was no longer a matter of switching to another track or anything to get around it, so every train in the system was stuck behind a train in a loop terminal.
The four track setup seems kind of pointless, especially because this game has no island platforms or crossovers whatsoever, so you're almost always going to be crossing active tracks to get to an express track which has no stops on it at all.
Station placement was kind of annoying, especially with the grid in the way, but was doable.
The last pet peeve, and this one is really weird, is the fact that the "ideal" fare fluctuates so much. It seems to change from game hour to game hour, and I like my customers, so I would set it to just above super-cheap (and still make oodles of money from an overcrowded metro system), but I kept getting notifications that fare A was too high, and fare B was too low. In addition, the generic fare, which I believe is a combo pass for bus, tram, and metro, had a lower "ideal" price in my game than just a metro pass, which is odd.
I feel like at the very least, that grid has got to go. The game itself, despite the really annoying metro issues and the weird graphics issues, is very pretty, the bus system is great, although I still find it weird that placement is always determined by a red box, regardless of whether or not it's a great placement. The brush thing with fare zones is also kind of tricky.