1) Quality of Creo, we consistently find that we can not release a version of Creo until it gets to around the M100 releases, for example with Creo 4 we tested many version until we got to M080 which seemed good enough to release, after releasing it issues where discovered and we quickly had to move to M090. This wastes a lot of time testing multiple version and frustrates our users.
2) Lack of some important abilities regarding MBD/3D annotations. For example not being able to create annotation tables, not being able to relate symbols to other annotations, not being able to control (turn off and on) combined views from the family table, etc... (There is a list the MBD working groups have developed with Michael Fridman)
3) Interaction with WindChill/PDMLink. We still get a lot of complaints from users, I think a lot is just a lack or training/knowledge but there are some legitimate pain points with family tables and complicated assemblies and dependencies.
PTC taking over cocreate and then treating it like the red headed step child.
The lack of help when requested from PTC
The lack of classes for Creo Elements/Direct Modeling
not necessarily in order
1.) Exploded states, the default explode state maybe should explode components based upon their assembly constraints. It seems the current paradigm makes the default useless. I'm always starting from scratch.
2.) Drawing BOM balloons. Difficult to select / re-arrange. Leader lines criss-crossing even after 'cleanup boms"
3.) Drawing ordinate dims. Much more work to create dims. Dims always are placed at the zero origin. The old style had a "select and place" work flow. Maybe make that a config option to go back to the old way.
some other ones are all ready covered by previous respondents
1) MBD/3D annotations need more functionality! Must be able to create tables (similar to creating drawing tables including Repeat Regions), etc...
2) Smoother interaction between PDMLink and Creo - event manager messaging needs to be improved and assist in identifying issues during check-in/check-out.
3) Lack of Multi-Body tools
1. Windchill & PDMLink and the cost of maintaining a supported version in a non profit work environment.
2. User Interface of PDMLink /Windchill is non-intuitive for non-IT staff.
3. Developing simple user applications for Creo.
1. I second zmiller's comments on "Lack of some important abilities regarding MBD/3D annotations"
2. Adding drawing notes. Indentations and carriage returns are a manual operation. Creo needs some simple word processing capabilities.
3. Online training. PTC University is (a lot of times) outdated.