Thank you for your feedback.
The Theme and style of Moodle is really very important to us and we are actively working to improve things in that regard. You can see that exemplified by our upcoming work on both messaging, and the Dashboard, by the updates to the Boost theme in 3.5, the updated Calendar interface, and more. We also plan to introduce a new theme in 3.7 to replace Clean (built on Boost but with several key differences).
With regards the Forum things are a little trickier. It is one of the oldest parts of Moodle, and as a result it can be tricky to work with - especially regarding both DOM structure, and interaction with style and JS.
I'm mid-way through a huge restructure of forum which seeks to bring it into the year of the Fruitbat and make things much easier to work with. In short, this restructure will:
- Introduce a new subplugin for Forums to allow new types of forum. There are a number of long-standing feature requests to add new types of Forum, but the existing code structure makes this unrealistic. The restructure will allow for new types, and allow developers to contribute these in the plugins database
- Restructure the Forum code accordingly
- Move the output of Forum functionality to use Mustache templates
Once these steps are complete we'll be able to update the look and style of the Forums more easily, and themes will be able to make their own changes too.
I'm currently trying to keep the re-style separate to the restructure as the amount of change is already massive.
I've added a screenshot showing some of the changes so far to MDL-62675. I will add others as and when I have a chance to finish more of the work.