If you are wondering which player has the least number of metal or crystal producers, then you want the Economy tab of the stats screen. In that screen it has a count of the total amount of metal and crystal coming in, as well as the "# producers" of each, and so forth. An even easier way to visualize more is to use the graphs view, and look at the metal and crystal income to see whose is lower or higher over time. Just click on the scores panel at the bottom right of the screen to see all of that sort of thing, if you're not familiar with it already.
Ah, nice, I wasn't aware that it shows the # of producers, thanks!
The galaxy totals are only ever going to be global information about the galaxy, with a few brief nods to you, enemies and allies -- it's really a very secondary feature. Generally speaking, its primary function is to tell you the cheats and other immersion-breaking stuff; all the rest of that information is pretty much duplicated from elsewhere. Per-planet data is based on the galaxy map filters or hovering over each planet individually, and all of the per-player information (and information-over-time) is in the stats/graphs section, which is hugely useful and which I suspect is just something you hadn't found yet.
My point is accessibility of information, really. The statistic screen is nice and very informative, of course. Overwhelmingly so, in fact, that it takes quite some brain cycles for me to drill down the information and comparison I'm looking for. The best example beeing I simply overlooked the "# of producers" column.
I mostly use the stat screen if I'm idle because other players are away shortly or the game is paused because they want to plan out mine-layers or rethink their build-queues. I just can't concentrate on this big table view while the game is in progress and 2-3 other players are talking via skype. I remember that we once checked the stats to decide who would get the first Mark IV builder, but we needed to pause the game to discuss the data. Now, that is not a bad thing, and we pause regulary and discuss our strategy and next moves.
But, opening this big stat window, clicking again on the economy tab, sorting by producers, just to see how many crystals my allies have, when we have this great quick overview of information in the galaxy view seems too complicated to me. The big selling point beeing that I'm in the galaxy view all the time, checking waves, sending fleets, classifying new worlds, in short, managing my/our empire.
You said the galaxy totals are a secondary feature and I agree, they are not very usefull at the moment, in my opinion. In the early game I can grasp the number of allied planets in the galaxy view and see my total ships in my control groups or using the Q filter on the map directly. In a late game this information is even more statistical than strategically relevant.
But let's say in a 3-player game everyone got 5 planets so far and a decision has to be made who will get the next adjacent planet. Let's say this world has nothing to offer but resources, to simplify the argument. This planet even has no grand strategy to it, no strategic value in terms of defensive position or new gateways to other parts of the galaxy.
It's simply a matter of saying "Ok, who want's some more resources? Let's check who's got what, to keep it fair and balanced." - and now I feel it will greatly improve the flow of the game if a had an quick overview right in the galaxy view who's got how many resources.
This happens a lot in our 3-player games during the first 3h on a large map and we literally count our crystals/metals right in the galaxy view, because even compare the big income-numbers or, as I said, break the flow and drill into the statistics is not as smooth as saying "I have 8C, you 14C and pete, you got 12C, let me take this one".
It's just a matter of hovering over the fictious Resources Overview button and seeing "Me: 8C / 10M".
Sure, all the information I'll ever need is right there in the stats window, but not as accessible as the overlay filters in the galaxy view or hover-over info-texts. The stats are great for long-term analysis or ending a session of many to come, just to see how we progressed against the AI. But I feel major information for strategic decisions should not be burried down there, but be accessable right in the interface. And I feel the stats are more of a secondary, addendum interface element.
As I said, those global informations about the game settings need to be somewhere, I guess I made my point not very clear in the beginning. This is merely a suggestion to improve the flow of the gameplay.