That's interesting that you say that. To you is it the nifty-ness of it or the functionality? I'm considering new features now that the issue tidal wave has calmed down and trying to prioritize which ideas to tackle next.
It is perhaps the single most impressive text editing visual design change I've ever seen (maybe second to kakoune's verb-noun reordering allowing selection-before-editing visualization). But while most such changes are functional but dull (eg sublime multiline editting), I can confidently say I like looking at this thing go (and the utility is minor, but obvious and good)...