@Meph: for adventure mode, I know even less than you, I usually just launch an elf when I am bored of fortresses, and usually end up getting him/her killed before long.
Doing this in masterwork 1.4 gives you plenty of reactions, so I made a knife, carved a bow, some arrows, all is good, until I try to find quests and companions, or even bandits or anything to fight against.
Pretty much every towns generated and that you can visit are based on the human towns and forts introduced by toady in .34.
With so many races around because of the invaders + Fortress defense, there are so few human towns and so much other races (only a few per race, but a lot of races) that you basically spend 20 minutes in this little map to try to find the only race that you can interact with, and most of the adventure stuff is nowhere to be found:
1. So far, no kobolds or goblins attacking as bandits, not to mention humans or anything else.
2. Very little low level stuff to be done (hunting bandits, human vampire...) and I even found only very few remaining beasts altogether, as they seem to be hunted by nearly every living forms on the continent.
So adding new reactions for adventure mode is great, but as it stands, vanilla is the way to go for adventures, unless you want to hunt animals for hours until you get high stats to take on an entire village or fort of an "enemy" civilisation, by initiating a fight with people merely standing around.
That being said, I am only a player, so I can only offer you the player view point on the matter, maybe try to see with the creators of the mods for adventure mode if you have time to spare (which you already spend by great amount for us).