First, thanks to all of you for the kind words and the feedback!
@Joecoolyo: I'm balancing QC on the recommended settings (first post). If you are using different settings,
chances are there can be differences. (i.e. weaker AI, different speed...)
@leonel: the maps included are made by Ronyboss. He claimed he was working on bigger maps, but haven't heard of him for a while now. But of course anyone is more than welcome to make maps/modmods for QC.
@Joecoolyo: I'm only supplying PerfectWorld2QC with QC. It's a slightly modified PerfectWorld2, to what I feel fits QC and my personal taste more. (less deserts and mountains e.g.)
Tribe is your first 'settler' type you can actually build and expand, hence the cost - it is so important. The settler makes the Tribe obsolete. Also, I did not raise their costs, the only thing I can think about that it's somehow linked to slowed food/growth in Stone Age era.
@French guy: if you hate Myth. creatures, I think you can just delete them from the units folder in QC.
@leonel: please provide a savegame before the crash (with info about what options you are using).
@debulm, Blue Anteater, The Almighty dF: I don't want to spam QC with too much added content for the sake of just having more. However, I'm not ruling out adding e.g. the Olympic Pantheon in the future.
@The Almighty dF: eventually I could still add some leaders, yes, but there are some ideas I want to do first.
@necxelos: creating a whole new civ is great work, and having it at the quality I like is even more. I do intend to tweak these civs more and perfect them, but anyone is free to make a new civ addon to QC.
I do intent to revisit the Future Era at some point.
I believe you are referring to the Blue Marble terrain included in QC. Well, I guess that as good as it gets!
@caoimhin: Fire/forest removal: that is a know 'bug' by me, and I left it so because it's not as easy to correct. I'll see if I can think about a solution.
Lascaux paints/dye: yep, that's a bug, and I almost made the same kind of mistake in my development version for a new feature. I'm thinking about a solution.
@none: I don't know why the desert promo is not working, but appearantly that's the case
I'll check the inquisitors.
@lymond: try not installing any of the LH packs. Also, the things the other helpful members mentioned could help, too.
@CellKu: Scouts can only defend, but yes, they do bring food home
Smaller tech popups: yep, donno why. It's the same with Next War for me. Will see if I can find out why.
@Joey9: 'slash and burn': the problem is there is a period between the chop and the appearance of workers. So I needed to add it as a build option to workers, don't know how to make chop replace slash&burn. But will see.
planting: there's no info about if a tile was chopped or not in the game I'm afraid, and adding it just for the sake of this feauture is not wise.
tech skipping: at the momemnt, yes. Also, corp. was not changed from vanilla.
naval units: will see if there could be some improvements
@CellKu: was thinking about the hunter unit, but currently it's represented via promotions.
But there are some conflicts between my code and RevDCM 2.8! When they are solved I'll release a new CCV version and we will see what can be done for you.
. Started with 9 civs again, but the 4; Ottoman, Korea, Japan, and Khmer, failed to stand the test-of-time. Now off to research sailing see who's out there. 
