As a lark, I'm playing a game on tiny. It's not quite my cup of tea, but it is a completely different game, and still kinda fun. Basically, I went into it knowing that I wasn't going to have the chance to do my normal peaceful empire thing, so I decided to be the b*****d warmonger of the universe

I've been attacking everyone on sight, and after a while getting peace treaties with "all your tech, all your money, all your influence" as tribute. Haven't managed to get any colonies as tribute, but that's not surprising since only the Drengin have more than one colony so far (need to double check that when I get home).
There's quite a few things that feel radically different. For one, I'm not the tech leader. This comes as a shock to me, I've always been at least neck and neck with the tech leader on large or larger maps. Second, the war effort is going far easier, probably because on a tiny map, Hero plays a bigger role, and in fact, has been blowing up starbases, colony ships, and constructors left and right, and is currently level 10. This never worked well for me on the larger maps, because by the time I found the other races, they were already well established and a token harassment force stirred up more trouble than the harassment was worth.
So while the civ-building isn't going as well, early warfare certainly seems to be easier on the small maps.