I'm not sure what the future holds. I have a few ideas and I'll play around with things. A lot of what you mention could be fun but can also be very involved projects so I'd have to really be invested in the story. I refuse to start something that I don't finish. I really want to have a good track record.
In terms of file size, yeah my buddy Jordyn helps with that stuff. He's been able to crunch the files down and still keep the quality that we see in the 4k images