I think WordPress needs to integrate some thumbnails abilities very soon. The idea is to be able to display a list of thumbnails instead of a list of plain text posts list.
There have been some plugin that add this usefull option but the main one seems to be not supported anymore (PostThumb revisited). Some other plugin are around but nothing really good. I think its a basic option. It make blogs more visual and the people that use WP as portfolio site definitly need this option.
Make this option available inside the app would make things more easy and more compatible for everybody.
What do you think ?