"Disappearing" settings

Currently 3 settings that are available when creating a decision is
not available when later editing it: "Decision mode", "Set the
eligible voters upon creation" and "Maximum Choices" ChrisKennedy mentioned
that "it doesn't makes sense to be able to change those options after
a decision has been created", which I mostly agree with.

But, to the user this is confusing. I can't think of any other place in
Drupal it works that way. If you are presented with a setting on the
content creation page you expect to be able to change it later on.

I think this can be solved in a number of ways, so the user have a
better understanding of what's going on.

Here is my suggestion (for 2 of the 3 settings).

1. "Decision mode"
I think it would make more sense if this was removed and instead
separated into different content types. This would remove the
confusion mentioned above and also have some other positive side
effect like individual content type settings (Default options, default
comment settings etc.) and individual settings on the create/edit page
(maximum choices doesn't make much sense when creating a run-off)

2. "Maximum Choices"
I actually think this could be allowed to be changed after a poll has
been created. If it wasn't possible to change this setting afterwards
the poll has to be deleted and then recreated, even if it wasn't
published. Additionally, settings that alter the preconditions of a
voting could if changed afterwards reset the voting. This should be
made really clear in the UI.

3. "Set the eligible voters upon creation"
I haven't figured out how it works yet, so I can't comment it...