Hey there. Thanks for the support!
Sadly, part of the lack of attention to the project is because i don't have time to promote the project, but once there is a decent build the plan is to release on steam and do a little promotion.
Progress is slow but steady. I'm almost finishing a new build that fix a lot of annoying bugs and add a (Beta) 3D lighting mode.
In this new version the "Record perfect loops" tool is improved, so this will be good for your novel. If you find any bugs with it after release please report in here.
Does mp4 support transparent background? I will have to research this.
Gif does not support transp. bg yet, but i will see if is easy to implement, and try to add it to the next release.