Changing the editor to let punctuation marks to be placed in the name of the elements in a model - for example the name of a use case. To be able to put dash, comma, colon or dot in the name of the elements.

Sometimes I need to add a logo to a diagram. Other times there is a project specific image that represents something well. I want to be able to add these images into the diagram or perhaps override the icon in a stereotype.

a swift code generator would be so cool

Adding support for this application would enable you to generate your StarUML projects as documents within confluence and allow greater collaboration on these diagrams and have them maintained and organised within a document management system.

If you make a change to the model it automatically updates it in confluence when checked in from StarUML.

JIRA tasks can be worked on from within StarUML.

I think that an easy and useful new feature is include a Requirements Diagram. Currently it's not possible to document the system requirements using the StarUML software. I was using the Enterprise Architect and now I'm looking for other solutions. The possibility to link the user requirements and system requirements with the Use Case is interesting to help to control the whole process.

I suggest you add a Use Case Specification, so that inside a Use Case Diagram, you can add the specification for principal and alternate flow and pre/post conditions for each one of the use cases in the Use Case Diagram. It is indeed a very used feature, and is lacking on StarUML 2.

implement BPMN symbols

A way to configure which elements to export in export HTML function. Which package or model and which type of element in that package (for example diagram, elements, connections). It would be good, because now it creates hundreds of HTML pages because it exports everyting, for example it exports a HTML page about every single connection.

Add UI diagram design feature
UI elements can be associated with classes and their attributes
UI events can be associated with classes and their methods
UI can be associated with a boundary in the UML profile

In version 1 there was support for this modeling.

Currently the decision tool/shape in activity diagrams has no label to type in to it. It’s essential it has one. Also, it would be great if this text wrapped nicely to the diamond shape that encloses it.

StarUML is just really slow for me.
This might come down to using web technologies for the program and me not using my best PC but it's still not slow and I think a computer that can run Photoshop without any hassle should be able to run a UML diagram software.
However, a usable performance would definitely be a killer feature to actually buy StarUML.

To define N-aray association between classes.

For documentation purposes it would be nice to be able to import an image file into a Note.

Specifically I want a UI Screen shot.

Implement C++ profile beside the existing UML standard profile

It's quite easy create a class, operation, atribute or role, but to describe the documentation, you need to access the lateral menu. This is inducing users to avoid to document. It should there a easy way to do it, like a shortcut, or even one of those little icons which you already use for another task.

For god sake! I can't believe that nobody mention this...
Who is designing and app for bloody diagrams without an option to easily copy styles between graphical elements... (like f...g color or font...)
Morons!

As an enterprise architect, I use ArchiMate for high level modelling and UML for more detailed modelling. It would be great if StarUML could add ArchiMate support!

Just like in programs like Photoshop or Sketch - pressing and holding spacebar puts the program to "dragging" mode where you only can drag the canvas around instead of its elements.

Add more control on the details of the generated HTML report.
Not all stakeholder are interested on all the details ...
Some may need only outlines, description and diagrams
while others may want to see all the details
and there are others in between.
Giving control over the details of the generated report will help to satisfy all stakeholders types.