Do you intend CoS to incorporate built in chat technology from its release?
We already have a built in chat system, so yes, it will be included on the initial release :)
What is your user interface like?
The game uses an icon based system for Abilities, so there will be icon tray that you can load up with whatever you wish. This system includes tabs so you can better organize your ability groups.
As for Equipment, the game uses a grid system rather than icons. We like being able to see what your equipment looks like in your inventory, rather than a tiny icon to represent your equipment piece. However, because a grid equipment system takes up more space, we're giving you a tabbed series of storage panels. Each tab brings up a different equipment grid, and each grid has specific equipment types that auto sort into these places.
Therefore, if you pick up a new helm from a treasure drop, just click on the Helms tab and you will see your new helm in the grid with the other helms you are carrying.