I suppose maybe they haven't really spruced up the resource generation code in relation to map sizes? How many resources get spit out has undergone a lot of changes in the last few versions. Personally I use a mod to play maps far larger than the ones Elemental usually creates. My experience there is that:
1. You either get screwed for starting resources, and get the bare minimum, which is 1 food and 1 shard.
Or
2. You get lucky. You get the minimum and a random amount of additional spawns within 7 tiles or so.
My basic rule is, if I don't have more than the minimum at start, the game is a throwaway.
If I don't have materials at start, the game is a throwaway.
Tech is really, really, really important in Elemental now. 1000x more important in the scope of the game than magic, So Lost Libraries clusters are also pure gold in 1.1. You can get the same effect with 5 studies or archivists...but you end up with a ton of research cities. And those all take time and resources to build. So I try to squeeze in a LL if I can.
Gold mines are pretty much useless in 1.1 The amount of money you make from taxes, combined with economic improvements, far exceeds what you can get out of the mines. So they're just a perk unless you get one near your starting point, which I never seem to.