Agreed, I'm a bit underwhelmed by intentrace when compared to the richness of strace. For sure, strace could maybe benefit from some UX like colorised output and a TUI that lets you filter syscalls while it is running.
Mmmm: https://github.com/xfgusta/strace-with-colors
Mmmm: https://github.com/xfgusta/strace-with-colors