What I miss in the Gallery2

Sorry for my bad english, but I hope you will understand...

* Category tree - Categories and sub-categories are mixed with the pictures on the same place. It makes foggy impression.
I would move category tree out of main place.
Example - on the top of the page or left side and no picture on the title (thumbnail)of the tree (It takes too much space ane pictures are inside of categories).

* I would wellcome fixed size of the page - wide. It does not look nice when window of the browser change graphic on the page.
Example, when I have narrow window, pictures from main place move down - it looks really ugly.

* I miss chance to use watermark.

* I would like to have possibility to hide some options as the admin
example - hide member list

* Last update - I would welcome option for more pictures then only one updated

* setup language

+ Instalation was really easy ane gallery looks good!!!