1. There is a "Recruiter" position that is technically, code-wise, a leader position with the associated edge and constitution benefits. The Recruiter does not have authority to order members around and generally should not be uninducting anyone.

2. It increases the chance that a spell bypasses spellbane, at the very least. It may help bypass other types of magical shielding as well, but a coder would have to be more specific. It also does some other really interesting things that I think tend to be overlooked.

3. Assuming "changes" refers to improbability tunnel, it's more than just the six basic stats, but it does not include size or vision.

4. Again assuming "changes" refers to improbability tunnel, the changes all wear off over time. However, once applied, the individual affects don't change until they wear off.