I suppose you could get a lot of sims to commute out of the city. You just need several forms of mass transit all headed in that direction, as well as a good highway system. Also if you build your industral sectors near highways or seaports they will use for freight just as well as trains, at least that is what I have found. I have problems with churning out boring cities as well, so I have started a new region that I networked together thoroughly with elevated highways and ferries. You just have to try to plan ahead. I did my best but but almost all of my MT systems are maxed out. I have found though that one good way to reduce commute time is to sprinkle high desnity residential and high density commercial together in small litrle sections. This way you sort of build a patchwork of zones and it makes it easier in some cases for sims to get to work. In any case, I hope I was of some help