Jeez, I've spent 6 hours(*) updating all my presets with some new settings on my go-to amps (Line6 Clarity for full cleans, Brit 2203 for slightly dirty, and Revv Gen Red+10 band EQ for distortion), and now I understand those who ask for global blocks.
It would be really handy being able to set a parameter to get what the global block's parameter has, so you only need to change that in one place, instead of dozens XD Favorites help, but do not solve this "problem".
Anyway, god bless Helix Native. If I had had to do this on my Helix, it would have been days XD
(*) The 6 hours were needed for callibrating volumes on every snapshot comparing with the original presets, not just for updating the parameters :)