[TeMPOraL]

It's definitely useful as a benchmark: it's the fastest, most streamlined task wrangling - and generally, tree-wrangling - UX I've seen so far, seemingly ahead of structured editing tools for Lisp like Paredit, though I'd have to play with Todool to be sure. If its existence generates enough pressure on more mainstream tooling to improve its ergonomics, that'll already be a huge win for the entire space.