Hello there!
- We have plans for custom templates, but it might be not as simple as just clicking-and-browsing for a SVG or PNG file. Currently in the nightly build we already have an option to import a background image which can be resized/moved manually, though. Maybe we can build the feature from this existing function.
- Yes, those are in the plans. For now, modern clothing is first priority; then fantasy/sci-fi templates will be released as content packs to prevent bloating the default library.
- We can't say for sure right now. We definitely like the idea, but the focus for now is trying to output layered PSD that can be used in Live2D, or maybe even better if we can output a Live2D from the app directly. Please note that this is 2D though, so the amount of movement is very limited compared to 3D.
Thanks for your interest!