some utility (some are simple think)

1- when one insert image is useful to have message with Image inserted;

You already have a title and description

2- in teaser is preerable to insert more than two images;

Use <!--break--> to define where your teaser ends

3- a button with insert also a tag or tag with style float: none in the body, so after used style left or right for image, one can interrupct the float with other elements of the page (example name of the terms)

Edit your configuration for float left and float right, you can use a class instead of inline styling, as explained in
http://drupal.org/node/289270

4- to make (or can to use) folder and subfolder where one can upload its images (example one user can preerable to subdivide its images in group;

This is a feature that could be added in future

5- upload multiple image

This is a feature that could be added in future

Please feel free to contribute code in the spirit of opensource

'Groups' now added to the dev releases