Feel free to do any of the voodoo cards (except perhaps: call leviathan, mindbar, official list of demands, thieving magpie and master craftmanship which are currently ordered from an artist - should be ready soon). There is a separate thread for this:
viewtopic.php?f=15&t=50 which in short says that if you provide us with an artwork we like, we will use it and also award you with credits.
Regarding new things, we are late on our schedule but this is something common with huge features. The main issue has to do with design and whether or not the feature added will influence the game in a worthwhile manner. For example, the initial mission requirements design was deemed "too easy". We decided to make them "more difficult" and eventually make this feature attainable mostly by the "advanced" players.
xmas things could come. Still too early though.
Holding forum games is not among our picks but there are some simple classic ones that are funny; I will create a few now. One way that could encourage players to interact more is Role-play. For good roleplay to exist, we need to build our world details. There are already many elements but they have not yet been wrapped in a story. This is something we are brainstorming - ideas are welcome. Setting up the world name was a big step towards this direction.
3d battles are not an option. However, strategic battles on a 2d grid with formations/etc might be an option in the future.