I have an original Intellivision and a bunch of games, and this aspect of this new version is huge, for me:
"..new designs and updated artwork to make it easier to know what buttons you need to press to play different games"
because I've tried many of those Intellivision games now, and the toughest part (to me) is always figuring out what buttons do what. You gotta get deep in the manuals, sometimes, to figure it out, which you might not always have if you only have the game cartridges.
https://www.theverge.com/news/801646/atari-intellivision-sprint-console-competition