The update is coming soon, I promise! All that's left is to animate some new water tile variants and do some checking to make sure everything tiles correctly. I'm aiming to get it finished by the end of the year / early January at the latest. Feedback and checking out the updates and new asset packs whenever they roll really helps out, and it's always nice to hear what people are up to with the assets.
Production buildings would make a nice addition, I'd have to think about how to implement them though... As for civilian / non-battle units in the style of the Fantasy Battle Pack, In the short term I was planning a small update to the free asset pack with mounted units but long term other asset packs with units / characters in the same style is one of the ideas I've been kicking around - but nothing concrete on that yet...