Well you know how I feel on the situation if you've read the link he posted.
And for the record you've skewed the poll, three options support your opinion, one option is neutral. And only one option against the opinion. Doesn't seem fair to begin with. I don't see how it will prove anything other then you distorted the poll to support yourself.
Quick recap, how he portrayed it in the original post, the ability to mod water levels and spawn/remove NPC's is cheating, but I would support this if it was implemented into the arena mode. Would Syrupleaf be an epic tale if they just removed the Spawns by hitting tilde? No, it wouldn't be. Fortresses need to end eventually.
Good news though The-Moon, dfhack has come out with a new feature that allows you to spawn NPC's in DF (dfmode). I've played around with it a little, and I like it because it's a third party tool and not in the vanilla. I recommend you check it out to attain these features because dfhack can already supply you with all the features you suggested, and Magma.
http://www.bay12forums.com/smf/index.php?topic=58809.0