alright, my simcity impressions.
first of all, holy shit, it's simcity 3000 on my friggin' phone!
So far, I love it. they have a very nice UI for building zones, water lines, roads, etc, while still being able to fluidly move and zoom the map.
they've added little buttons next to the zone (or road, pipe, etc) edges to move and adjust them. this allows you to differentiate between standard screen taps, that move the map, and the taps on those icons, that move the element you're placing. it works very well for me. I think it's a good solution.
All the icons for placing items are clear and large enough to tap. when an element is going to introduce a lot of options (like picking a school hospital, etc) a new screen comes up with clear images of the institutions. you slide from one to the next. It never gets overwhelming or too crammed, which is important for a game where you spend a lot of time in menus.
I did have a crash this morning but when I reopened the app, it had automatically saved the work i had done, so i did not lose my power plant, industrial zones and water tower. so that's nice. i expect more crashes in the future as the cities get even larger. I hope a patch will fix this but it seems to be common with too many iphone games right now (low memory warnings)
another thing. similar to Safari on the iphone, they've prioritized the fluidity of map scrolling over the map rendering. so as you slide and zoom the city, the buildings disappear and you only see the zone colors (similar to the checkerboard on a safari page getting scrolled). the buildings fade in very quickly once you stop moving the map. I think that was a good design choice. sluggish scrolling would be much worse.
so, yeah, if you liked simcity 3000, this is the real deal, kids. It looks to be all here, but with UI elements optimized for the iphone. get it, it's good.