I feel like the main benefit of such a thing would be centralization. Part of the issue with the terminal ecosystem is precisely that everything's so fragmented and everybody needs to support arcane terminal protocols and wrap a billion wrappers around each other. The easiest way to solve this is to be a definer yourself rather than an integrator, which I think is what this is trying to be. If we could actually have standardized terminal extensions in one place (you'd be surprised how many extension codes there are in terminal land) that has a different semantics not from the 80s, but still captures the terminal experience, that would be great.

The 'cleanest' experience I've got for what I want is mosh + tmux and even that has issues (no block cursor for example).

If superlogical's ultimate goal is to revamp the Linux developer ecosystem, all for it. Am potentially worried long term about these kinds of strategies from a political point of view but as long as things stay open source and stay as local dev tools, its fine.