(1) armblade would be one-handed, the battlefist enhances a natural weapon (this makes it act like a natural weapon, which means power attack works like one-handed, but you can make a secondary attack with a natural weapon with no penalty to your main attacks, the whole natural weapon gamut.) The battlefist's effective type varies on what you are doing as with all natural weapons.
(2) No for battlefist. I don't see any RAW reason to not allow two-handing the armblade, but I am not exactly sure how to picture it in my head.
(3) Yes, if they meant otherwise they should have mentioned it like with the armblade.
(4) Yes, they have a scent of smell, but it may not be anything like a human's scent of smell. Maybe the warforged can detect the scent of flowers, but they can't "smell" the fragrance of a flower they way we do, but the still are able to tell the difference between two different flower scents. That would be how I would present it.
(5) Is your question whether it is more balanced to play as a +1, but you want to give it a little boost? I guess it would be fine at a +1, I still would play a warforged at a +1 LA and a +2 Str would help.
(2) No for battlefist. I don't see any RAW reason to not allow two-handing the armblade, but I am not exactly sure how to picture it in my head.
(3) Yes, if they meant otherwise they should have mentioned it like with the armblade.
(4) Yes, they have a scent of smell, but it may not be anything like a human's scent of smell. Maybe the warforged can detect the scent of flowers, but they can't "smell" the fragrance of a flower they way we do, but the still are able to tell the difference between two different flower scents. That would be how I would present it.
(5) Is your question whether it is more balanced to play as a +1, but you want to give it a little boost? I guess it would be fine at a +1, I still would play a warforged at a +1 LA and a +2 Str would help.
