Heya, I posted this a while back into GeneratePress’ forum, but now that I’m here (thanks David!), i’ll repost - it’s an important matter.
Please add a “Inherit all styles”-button below the per-block global styles switch and show it when the switch is turned on and a global style is selected. The button would then remove all local block settings and THEN you could finetune the block if needed.
It bends my mind that a global style, when assigned, gives way to the very things you wanted the global style to contain! x) With the above switch method, both use cases would be covered - Global as in inherit Global but keep local settings AND Global as in empty local settings and inherit all.
You could then also easily reset the block back to the global template by pressing the “Inherit all styles” button again.