>What would make something like this actually useful in day-to-day work?

Monitoring of BGP Changes for ASNs.

The other stuff isn't something I really need a new tool for.

There are other tools by Ripe, HE and the like that already allow me to see historical data.

The only point at which I need actual up-to-date to the minute data is during incidents. Hence the monitoring.

I use to use pulse turbobytes use tracroute from dozens of networks.

I lost count of how many times those results got a peer to acknowledge a forwarding plane discrepancy