Self explanatory

Easy moving of a sketch (and associated feature if applicable) to another plane (in part mode). The need to erase and redraw wrong positionned sketches could be avoided allowing some timesaving along the design process.

Distance limits; Angle limits; Gears; Cams etc.

Apply extruded cut in assembly that could cut through any or all parts by selection.

Incude an automatic weld feature to generate welds. Solidworks has this feature. A lot of equipment is produced from weldments. This would especially be beneficial for accurate FEA stress analysis. Now, I have to physically draw every weld now and assemble it into the model while leaving one to 3 thousandths space between welded parts to accurately model a structure.

Project to Sketch enhancements:
Project silhouettes. Project Sketches to Sketch. Project 3D Sections with option to maintain associativity. Parametrically Project/Offset Figure to Sketch.

Global parameters support built inside Alibre.

To give possibility to change many parts and assemblies parameters from one editor. Update button to execute changes and refresh the model.

I know there is many ways to achieve this, but spreadsheet connections get messed up with updates.

In my opinion Alibre needs it's own simple editor for global dimensioning / parameters.

Move Parts to/from top level Assembly to Sub-Assembly. Break up Sub-Assembly. Group top level Parts into Sub-Assembly. etc.

It would be extremely useful to have a utility whereby simple solid models of spur gears, helical gears or bevel gears can be generated given basic geometric parameters.

Alibre motion needs to have a collision detectection feature where a part in motion is arrested wehn it contacts another part. This feature should also be able to take into account a part in motion being acted upon by a return spring and being acted upon or acting upon a camming feature.

The ability to Extrude, Sweep, Fillet, or Chamfer from one geometry (Solid or Reference Plane etc.) to another - the position of the defining Sketch (in the case of Extrude & Sweep) being at any point .

would like to see center, midpont etc.. snaps in sketch mode (including hole creating.)

The ability to apply text to a curved surface, such as a tube. Many times the only place to engrave a part number is on a curved surface.

add capability to pull accurate dimensions off isometric views, add alignment options for resulting dimensions, i.e. with axis, plane, face, etc.

The usabilty of Alibre in some dialogs is ugly uncomfortable, i.e. context menue or equation editor.
a.) equation editor
- a double click into a line should open the editor to alter a value of the parameter
- a change of the parameter's name should automatically alter all the references of this parameter- after changing a parameters value, the focus should be on the OK-Button in order to close the dialog with another <Return>

b.) context menue
the Hotkeys in the context-menue should be made unique, until now (V11.2) they are not.
look at http://www.alibre.com/forum/viewtopic.php?f=6&t=8886&p=50154#p50154

Import 2D DXF file into a sketch rather than into a drawing then copy/paste into a sketch. Also after drawing a sketch, the ability to export that sketch to DXF rather than creating a drawing and exporting the drawing. Yes, it is possible now get this functionality, No it is not easy and efficient. These features would allow me to be done with AutoCAD all together...

Allow an extruded flat pattern to be rolled into a cylindrical or eliptical part.