Clans mode is ok but the whole barbarians feature is still the biggest nuisance of the game. I still have to give up every third or fourth game due to massive barbarian invasions. They are just too many, too strong, too early. And very often they attack together with the first wave of AI enemies. If you disable barbarians, the AI will destroy you even faster. There should be at least two different "aggressiveness" settings for barbarians, like in previous Civ games. It is so obvious that the game would be better then.
I think even if there was simply more delay between the barbs and scouts. Or if perhaps barb scouts only had like a movement of 2, so you could actually chase them down.
Like, to me, the flaw right now is that within 5 turns, so before I could ever build a unit, I have almost 100% seen a barb scout, and half the time they have probably already "seen" my city and are running back to their camp. So you really just can't handle it. And if a scout has seen you, my warriors or slingers simply can't chase them down, so the barb army has already started. And since the early game the map is so empty, sometimes you have barb camps in like 3 directions.
If things were just a little slower. So, for example, if a camp shows up, but then there was a 5 turn delay before they spawned a scout, that just gives you slightly more time to get ready for it. And if barb scouts only had 2 movement points (similarly to how barbarian horsemen are a weaker version of regular horsemen), then you have a chance to potentially chase them down before they can get back to camp.