I think the idea of exploring textual UI/UX through spatiotemporal dimensions and almost tosafotic tree-ring formats is still under-explored and could be quite promising!
When it comes to critical feedback I'd say I'm not sure the proof of concept program sells the vision; ie I'm not sure I would use it personally until some clearly fun/useful mechanism was shown. Until then it comes across as potentially interesting, but not clearly so, especially given we live in a world with many textual interfaces like threads (reddit, twitter, etc), personal note taking systems like obsidian, etc. that can also allow us to revisit old posts and connect them usefully to new ones, etc. I personally leave this pitch not knowing to well how I would use the first proposal / program and to what use / effect. However I can imagine the second long term pitch pokemon go for text being very interesting!(this also suggests another short term in-road might be a better system to boostrap the long term vision).
I'd advise Sunrise to work on a better sell of the system before expecting to get others to collaborate with it; although the pokemon go for text/thought is quite compelling so that might be enough of a pitch!
When it comes to developing an MVP, maybe make it a plugin for obsidian to leverage the open source code and community behind it and to maximize the change of faster and larger adoption which would help the stated goal of helping people accelerate the win condition (just an example; but I am a biased obsidian user, and it might be possible to quickly spin up a better solo version using LLMs + dedicated team).
Viewing post in Mindstream jam comments
specifically, the plugin / mod option for obsidian or other textual note systems / sites might be a good way to boostrap by lowering adoption friction in a high switching cost enviroment. maybe a browser extension that pings the user in these loops, and can embed itself or extract from social media too etc.