@Hugo: Okay, well, hm. What happens if you set the tissue thickness to 0? Can you suppress it with other erroneous handling of tissues, such as setting the tissue, then changing it to something else that doesn't exist or moving it to an unreasonable position with one of the tokens to edit tissues? This is an issue of keeping the errorlog clean only, and something like that might work because many of the "higher" modding functions simply don't generate an errorlog even when they should. If it's impossible then maybe it could be considered to also just remove them for development and add for upload (that needs to be easy though). But that still may hinder bug reporting if people eventually don't know which is supposed to be in the errorlog.
@Gnorm: Halfling mayors have [RESPONSIBILITY:RECEIVE_DIPLOMATS] for this purpose.
Regarding the trolls, I wasn't too interested in the idea at first due to assuming treelords already did that, but having read the whole post, I'm somewhat intrigued. The idea of them having a primitive language appeals to me. Whether we keep their tree limit function or not, I certainly think they should be included in some way or form.
Their language also very occasionally generates new universe and place names such as "Talenetherworld". And I just met chief Shack Redsboss Biggestunder Sniffer in adventure mode. He had a crown and earrings made of people.
I think the best function is that you'd be able to fight a blind peg-legged troll head hunter and his variously crippled but fearsome minions in adventurer mode. I've had great feedback on how much that adds personality to the adventure in the disease mod, and these are even more varied. That'll work whether they're tree cap diplomats or bandits or anything.
Basically, once I saw this video:
https://www.youtube.com/watch?v=tEzuxkkGyWQ , which they're looted from, I immediately thought of DF goblins, and I knew I must mod them a little or a lot to be more fun before I can be at peace. And then I figured that instead of making a vanilla mod I could add more content to DFFS.