... A development team that knows what to do from the start* and uses good ideas from games that were made before, as well as some original ideas. The beta feedback should be used only to fix bugs and polish the details, like adding a new feature that won't change the general game mechanics but it's a nice addition that makes the game more enjoyable ...
Yet another situation where things seem either-or to (many, most?) folks but I want to have my cake and eat it too.
More than a few apparently forum-driven changes have disappointed me, especially the big 'win' for the simplified economy. But on the whole, I find the devs' interest in ideas from the peanut gallery to be oddly fascinating and admirable.
Whether or not they had a fairly settled set of mechanics in mind when they began the public beta is not important to me because I'm not a very competitive player. I mostly play to play and 'winning' a game just happens eventually if I don't manage to 'lose' or get frustrated or bored with a map and start a new one.
I'm just pretty confident that the stuff Brad calls content would be stronger overall, in a way that makes the gameplay more distinctive, if the basics of the game world had been fairly settled, particularly the cosmology and the general social dynamics for the Kingdoms, the Empires, and their canon factions. Decisions about how to shape the mechanics and maybe the UI would have yielded richer results if they had been made against a relatively stable, modestly detailed background world. Maybe that's exactly what's happening now as the, ahem, Random House inputs are being included.
@Sushikawa: Re the current state of city-building (which I believe is slated to change significantly for RTM), I don't quite follow you. I've complained about 'boring' clicks for stuff like housing, and for a very long time I've typed here and there about how swell it would be to see Elemental be the first TBS game where cities were not tacks in eventual wall-to-wall carpeting and had distinctive identities shaped by their location and some player actions. I'd trade the entire 'housing' thing for a two-tier settlement system that meant rural villages would stay rural villages and a town could eventually become a metropolis, with the help of a surrounding network of villages.