@Uzu Bash: It's hard to make out what you mean, but it looks like it's a suggestion, in which case it belongs to the suggestion sub forum. If it's actually meant to be a question to Toady the convention is to paint it in (lime) green so he can find it easily when answering.
@DrZCochraine:
We haven't yet passed the artifact arc, so detailed answers about the myth & magic one might be a bit too early to expect answers to.
1. A good question that might get an interesting answer.
2. Hardly in the first M&M arc. It's not an unreasonable development, though.
4. This is in the same vein as dangerous research and is likely to happen, but again, I wouldn't expect if for the first M&M arc.
5. Disasters yes. Instant game over no. Toady (and most others) don't like "You rolled a 1 on a D20. The fortress disintegrated". Catastrophic yes, deadly without preparation yes, those options are game (and already exist in the form of greedy mining). Again, probably not the first arc.
6. Quite reasonable, eventually. I wouldn't expect it in the first M&M arc.
7. Interesting question. Once two directional portals happen (which won't be in the first M&M arc), I don't see why you can't build on the other side. Embarking on the other side has implications for the pre embark screen, so I wouldn't be surprised if it would be near or beyond the 1.0 version (a couple of decades from now), but you never know.