XF 1.2 3 questions regards to subforum (list not dropdown)

[Nudaii]

how can I hide them from showing on forum list in just one forum (say node 2) yet visible in forum_view

On some node I have removed the icon, how can i align them so the list begins to the left (not after where the icon used to be)

Is it possible to have a dropdown in one or 2 nodes, but rest use list?

Thanks in advance