Played my first game with LL3 - interesting map which I shared with my brother and he also said he liked it.
Since I was sharing the map I went with standard settings. It did have a different feel from the LL2 maps, which I later realized was probably due to the sea level bug in LL2 (low level used although standard selected). With LL2 I had almost always gone wide, but this felt like a tall map, so that makes sense given the bug. Also, my only land-based oil was in a marsh completely surrounded by mountains. Looking at the map later I thought perhaps there were a few too many mountains, so I took a look at the code to see how this is controlled...
In the meantime I had started another game where the map seemed very odd. Searching for 'mountains' in the code I found the description and workaround for the tundra/desert bug, and realized that's what happened to my new map. I had lots of tundra, little or no desert and no proper mountain ranges. Virtually all the mountains were on the coast, some were "clustered" but not really in ranges, mostly isolated. This is a small map BTW, which I think is relevant. I think the mountains were the failsafe ones. So, the bug still exists and the failsafe doesn't always fix it. It's not really a problem, as now I can recognise the bug and just restart, but I thought you might be interested.
Anyway, I found how to control the number of mountains using age and generated two or three maps using each setting - none of these had the tundra bug - so now I know what to do to get what I want.
However, one of the maps had another oddity. Sadly, I didn't keep it as I was focussed on the mountains issue. One start was loads of desert with multiple rivers and not much else. There were two citrus in flood plains. I'm guessing that was the best it could do with the terrain and wanting to give me my luxuries, but it felt wrong to me. Sorry for the rubbish bug report, if indeed this is a bug, without a reproducer or even an example.
Definitely going to play more games with this generator as overall I think the maps are fun and look great too!