Much as I love the metric system, I kinda think the moment for changing time units has passed. At the latest when computers became a thing, probably even before that.
And 12 based systems have the advantage of having having many divisors which is very neat as well. You can divide an hour by 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30 and 60 and end up with an even number of minutes. Then again with a decimal system fractions wouldn't be so bad.
There are now at least a dozen calendar reformists edging on posting a rant about this lol.
Worth noting though that this has mostly stuck around because any attempt to switch to a more divisible week structure is met with resistance from Christians and Jews since going off 7s messes with their calendars.
Of course you could use just two liminal days inserted outside of the standard month or week and basically have a calendar where holidays stop jumping dates.