Something you may or may not be interested in, related to improvements...
Currently working on allowing promotions to add BuildOrders to a unit (Testing now, still need to add display code but that can come later). Two reasons for this:
- Get rid of most of the worker UU's that have been cropping up. Promotions won't be able to REMOVE builds, so you'll still need some, but you can easily add special builds.
- Make the worker xp system more rewarding; For example, allow a worker that specializes in defensive promotions to take a 'Fortification Specialist' promotion allowing him to build a Castle, rather than Fort (Or whatever the second level is called in Orbis, think you renamed them).
So... What do you think?

If you're interested, there's a Wave up about the design and I'm more than willing to share the code with you. May be a while for the next RifE version, so if it's not requested it might be some time before you can get the code otherwise.