Hopefully it will include things like transit in medians, along with funiculars, gondolas/ski lifts, workable canals, and expanded underground transit and road networks.
Also, seeing an LA style 4 tile freeway with carpool HOV lanes wouldn't hurt either... of course as long as it's in a videogame.
And cemetery zoning (rather than confining it to ploppables) would be nice.
But nothing would please me more than seeing various optional weather and seasonal effects.
