Ok, thanks for shedding some light on the situation Karoliina. I think we all have to realize an agent based system for 1 mil population has it's limitations. Also if people wish to exploit the system it is their right, this isnt a highscore based game where everything has to be fair.
However i would like to tell you of my first city where these limitations and the game design influenced my city in a way i did not enjoy. I was happily making my city and focussed on a good road network. At some time i unlocked busses. I made a big mistake in my bus network that i made long lines which required way more busses than the game spawns as default. Also it was the only public transport option, so i got the "crowded busstop" thing. Not a problem, i enjoyed seeing it and went on my way. I noticed however that traffic all around my city was pretty light and did not run into any problems. After playing for a bit longer and making the switch to high density the traffic just did not seem to really increase much. Especially near my industry there we're a lot of trucks but rarely any workers at all. I started investigating and started following some cims from their home to see how and if they get to work.
The first cim i followed went to the overcrowded bus stop and waited for a while and despawned. He tried again a bit later and despawned again. I followed some other people and i noticed a LOT of people i followed just couldnt reach their destination. I saw kids going to school who graduated while at the busstop without ever reaching their school.
Now the thing is, i understand the safety net of despawning cims (allthough would love a way to disable it for a hardcore mode), but i designed a horrible public transport network and it didnt have any adverse effects on my game. In fact it had a positive effect on my game. All those people waiting for the bus did not really contribute to traffic, they got nowhere but did make sure i didnt have any traffic issues, and the businesses didnt mind noone (or hardly anyone) ever getting to work.
I hope you guys consider balancing this out a little, or what might be the best idea in my eyes is a difficulty setting for traffic rules, where you could use the current system or make it a bit more challenging.
In the end i made a city without any public transport and it's a lot more fun to me because now at least i got some congestion and problems, which is bad for my service vehicles, which in turn adds difficulty for me even though i still find the game very easy.