I'm not designing with speedrunning in mind exactly. You're the only person I'm aware of to mention the freeze framing, but I'll take a look. And from what I've seen of speed-running, they almost always avoid battles anyhow.
As much as I'd love to let you explore the world more, that's not the point of the demo and would be impossible for me to create in such a short timespan. The purpose of a demo is to show you what the game has planned. If I had those areas built then it wouldn't be a demo but an actual game.
Thanks for playing. :)