People which make medium to large projects probably have this issue. A lot of event blocks and a lot of groups causing a big mess in the sheets. These also all appear expanded after renaming the saved file and loading it again no matter if they were collapsed beforehand.
It would be very useful to have a shortcut that would expand / collapse all the groups and event blocks for much better organization.
Instead of pressing each arrow to close them subsequently (so that when the block/group opens it again there won't be this huge wall of code directly), the user would use a shortcut that would close from the deepest branch towards the top most one.
This would make big projects way more manageable easily.
"Expand all" and "collapse all" options are available in the latest releases.