I've got a couple coworkers who come over every so often to play at our house (One of them is borrowing my Batman 66 for the holidays, actually).
I periodically go to the IC page and check his stats (to see how many games he's played on the loaned Batman 66) and check the High Score Table for that machine in my collection. It's been fun to get messages from him that say "Check out the HST for Batman, I had a pretty awesome game last night" or for me to jab him with a "Still can't beat that factory 500M GC? What gives?!"
Would be fun for guests who know I have a Deadpool/Batman66/Mandalorian to be able to check my basement's high scores from their phone if/when they see one of those machines on location. Then they can kind of mentally compare their scores on location to the scores on my home leaderboard. It's more fun to compete against people you know than strangers, imo.
I like the idea of having a URL that makes that process a little less clunky.
Also, the more obvious "reset the high scores for the night" is a really cool benefit for the home leaderboard when you have people over to play. Nobody wants to try to beat a GC that has been set on a game I've owned for two years, but they *do* want to try and beat the high score that has been put on a game for the night.