The possibilty to create custom content types. Choose the fields and fieldtypes they should have. The works.

A built in forms component will be very useful and would increase more possibilities by integrating in to the core

Joomla Content Editor should be part of the core. TinyMCE is too feature poor of an editor and the media manager capabilites are much better than the existing one in Joomla core.

o Build a system to support content versioning.
o Allow for compare and restore revisions.

The possibility to translate everything (articles, menus, modules etc.) into different languages without the need of a 3rd party component.

Implement a tagging system available for content. Use the search index as a common location for content to be tagged.

Implement a commenting system available for content. Use the search index as a common location for content for commenting.

The possibility to set the size of images that is uploaded to the site. Not all the users has the knowledge needed to reduce size of images before uploading them. If this could be done automatic it would be greate! Admin sets the parameters and all the images are sized the way admin wants!

Like boggers, wordpress we can have a full functioned blog for joomla witch includes comment,comment, approval, pinback , sharing etc...

Build a mechanism for integration the Media Manager with external media sites such as Flickr, YouTube, Vimeo, etc.

Put content through a customizable workflow before publishing

the wyswi editor make unwanted change in the code..

there should be a tab where you can put javascript and css in there...

gr.

Expand the Media Manager to allow users to build media galleries which can be displayed in various ways. Build functionality to handle basic image manipulation or integrate with third party media manipulation services such as photoshop.com or kaltura.com.

Urls should be created from content, not menu items. The menu manager should merely create aliases to articles and components, lists excepted. Instead of Item(menu)ID, modules should be assigned to lists, articles, categories, components, etc. Advantages: will shave a layer of complexity from Joomla, eliminate duplicate content and allow for cleaner URLs. The only minor disadvantage that comes to mind is same article can't have 2 or more links and module assignments.

The hability to add social media buttons like Facebook's like or Twitt Me's on articles. It's mainly because there are several ones but none that allow full customization without gettin' into PHP code, and that's simply not Joomla!

When a user creates an article via the frontend, then only way to create a menu link is for an admin to go into the backend.
Or for a categories page to be created which will just be one link to ALL created article of that category.
We need to allow a site to expand naturally with it's users, and navigation of the content is very important.
Please vote 3 votes to get the key feature added to Joomla as soon as possible!
Thank you!
=-)
Cormac DC

Wouldn't it be great to add the RESTful API and move away from XML-RPC?

- Each method along with its own URL.
- CRUD (Create, Read, Update and Delete) functions.
- Output: JSON, XML, etc.

A template designer where one can drag and stretch the module positions to where he wants them to be and then generate all the necessary code, files and folders.