Oh, there's no question that it'd be well received, and i'm sure that if someone made a game half
as good as the one you've described, it'd rake in cash like nothing else. But to make it would be an unnecessary gamble when you can make a reasonably cheap game that's nowhere near as ambitious, but will sell to a respectable degree.
As long as we're talking about games we'd really
like to see; i've always wanted the ultimate
RTS: Basically, we're talking a completely real-time multiplayer game that starts out in ancient times, expands, expands and expands as technology develops, transitioning to a global stage when you get the technology. You can build cities, armies and navies in incredible detail and customisation, with a completely fluid and massive tech-tree. You can zoom from several kilometres in the atmo right down to a few metres of the ground, and have realistic physics and scales. Think of launching a strike on an enemy held Hawaiian islands with your entire WW2-style Navy of custom-chosen design aesthetics and weaponry, all the while capable of seeing each and every gun firing, from flak to 240mm cannons.
Once you reach a certain stage, you can start building spacecraft [fully customisable to the nth degree], and eventually leave the Earth and colonise the solar-system, and then intra-solarsystem throughout local systems, and then the galaxy. Of course, the scale would itself be scalable, making the most detailed view larger and larger as technology and the size of your territory increase. Think Spore
crossed with Civilisation
and Supreme Commander
, with a dash of Sword of the Stars
Show me that game, and there would be no limits to how far i'd go to show my thanks.