Currently only Javascript is supported for scripting vehicle simulation. Gameplay scripting will be possible once Anteworld itself will have some gameplay & scripts driving it.
When the engine becomes usable by 3rd party indie developers - only after it becomes successfully used in some of the commercial projects on which we are involved, that will provide funds for its further development. We can't quite imagine OT living off the engine licensing to indies alone, given that it can't easily run on any mobile platforms and consoles with a wide user base, and making games that work on the global scale is considerably harder too.
Also, right now anything that wants to use OT needs our direct participation due to the incomplete API and docs. Making the engine widely accessible requires lots of resources that we currently do not have, so the indie version can only appear as a byproduct of the specialized engine development.
There's no terminal look for the graphics, it's meant to evolve with the HW capabilities.