Couple other questions.
Is there a way to:
-regulate the number of invaders in a siege
-make a race either trade with another race, or hate another race; they're both evil
No.
Yes, ethic tags.
Ethics tag encourage the other civ to start wars, but the default status will still be peace. The buffalo ethics tags cause a fair few wars in world gen, for example, but I've never had a civ that was at war with the buffalo on embark.
I think that there are tags that directly control how long a civilization will take to invade you; ie. how much your fort must be built up before they bother invading.
Those only take effect if they're at war for some reason, and there are equivalent tags for when they trade.
I've asked before about the flier problem and people seem to prefer having it on, since you can do neat tricks if you know how to use it. I tend to use ramps. Actually, I tend to play as cave ponies so it's not an issue.
A thought regarding dough: Since the reaction calls for booze(as moisture and raising agent), do we want it separated into two tiers, based on booze value? I was thinking it would be best to tag every booze with the same material value as sunshine or better as valuable booze, so ponies aren't wasting golden applejack or pink finger lime wine when it has no effect on the finished product. There's no great amount of work involved, it's all find and replace now that the reactions work, but between having separate reactions for making dough with oil, tallow, or butter and this, it'll make more sense to have standard and posh bakery buildings so that there aren't billions of reactions all in one place. Or am I overcomplicating something most people aren't bothered by?
Oh, and do we want ponies made of bread, cookie and cake to appear by default, or should I give them a [DOES_NOT_EXIST] tag so that they'll only appear in engravings or statues "The item is an image of crimson banana gateaux pony in whip vine bread by Rutod Udargost".