I think a boost to happiness gains would be nice. Looking upon a field of downy grass and bubble bulbs (I don't care what Toady says, I prefer to think they're not ACTUALLY made of feather down and bubbles) would calm anyone down. Maybe adding more good subterranean creatures like the Gorlak would be nice as well, in addition to making said Gorlak actually DO something. I mean come on! It has [BENIGN], [CAN_LEARN] and [CAN_SPEAK] in its raws, and is know for its 'stimulating conversation' and 'helpful guidance'! There should be some kind of interaction with them possible!
Finally, good megabeasts. I remember Toady mentioning once in DFTalk that he'd like to make good and evil megabeasts. He gave the example of a good ocean having a giant rainbow shrimp. My thoughts are, why not have the good megabeasts - instead of being purely kill main burn chaotic evil - give you tasks?
Example, say your fort is in a good tundra. One day, a massive Musk Ox, composed of snow and the Northern Lights themselves, appears. It gives you the task of gathering five hundred silk cloth by next year (as to why can be explained with simple mythology standbys as 'Because he was cold'). If the task is completed, it grants you a boon. What sort of boon I can't imagine, but a good one. If you fail, it just leaves, maybe leaving behind a minor curse in the process (in this example, it would make all the alcohol in the fort freeze for a month, meaning you'd had to brew more post-haste!
This looks pretty awesome but i think it's too much straightforward. Look at it this way - you just embark. then some woolly monster finds you, caomes to you and says what he wants of you. Thats not what legendary unique megabeasts, keepers of astounding magical secrets and godlike powers do.
Instead, you should find in legends that the megabeasrs exists, find in legends what does it need from followers, get enough of it for him, build a pretty shrine, then find a way to summon it to your fort and hope it will actually give you something instead of just saying "thanks a lot guys".
That would be even better! Being able to summon Megabeasts with complex rituals!
BUT, there should be a downside to a summoning. Maybe make it have a small chance to summon a random Clown instead? Because after all, if you make a gateway to the Warp things are bound to slip through.
