Isorhythmic notation

Greetings! I write hymns from time to time, and sometimes hymns are not as cut-and-dry rhythmically, especially if it's chant. When I hand-write, I exclude time signatures. I've noticed that in MuseScore, there is no obvious way to do isorhythmic notation. This would be a WONDERFUL addition to your next version, the ability to leave out time signatures and have measures with different counts (without having to change time signatures constantly.

Thanks!