These may already have been suggested, and I hate making people read walls of text.
so here is one:
Armor Preview -
http://i235.photobucket.com/albums/ee150/Mirokux1337x/ArmorPreview.png
Edit: forgot text. Because those menus only show when moused over, making so when its in your "shopping cart"
It previews the armor in a box. It could even be below or above the merchant art.
For multiple items in your cart, previews the latest one.
Guild Announcement Board -
http://i235.photobucket.com/albums/ee150/Mirokux1337x/Guildannouncmentbo...
Guild Mineral Deposits -
http://i235.photobucket.com/albums/ee150/Mirokux1337x/Guildsuggestion.png
derp... "inventive" should be "incentive" Typos ftl.
There are my suggestions, for what they are worth.
They have all already been suggested, but your the first one to incule pictures, very nice lol!