missing pop up on-screen (centered) type of notification
I would like to have pop up on-screen (centered) type of notification like we get in Etar (if you use it) with snooze and dismiss button. Every time swiping up and checking the notification bar is annoying (personal opinion).
~Or alternatively somehow join/group all notifications in the notification bar into one large notification with no buttons whatsoever.~
~Swiping this giant notification right/left would then be configurable to snooze or delete them all.~
~But touching a specific item in the giant notification would open the corresponding event (and thus remove this particular item from the giant notification).~
~This should be (much) easier to implement than the popup screen IMHO and should do the job.~
Edit: read further comments
Well, now after few weeks of active use of Calendar I am certain my suggestion above about extending notification capabilities is wrong and we really need a modal dialogue with a scrolling list of notifications.
This modal would have two buttons at the bottom - a bigger one Snooze All or the right side and a smaller one Dismiss All on the left side.
Snooze All would snooze all notifications in the modal by a user-pre-defined period (10-120 minutes usually).
Dismiss All would dismiss all notifications.
Each notification in the modal could be clicked anywhere causing opening the event editor and thus removing this notification from the modal. Each notification would have a small x icon to dismiss that particular notification from the modal.
At the top of the modal there would be a title showing the overall number of calendar notifications: Calendar notifications (7).
The modal shall only display if no activity is being shown (incl. no activity from Calendar itself). In other words the modal will pop up immediately after switching to the launcher.
If using this modal, then no calendar notifications would be shown in the Android's notification drawer.
Btw. I think it is totally fine if the Android notification drawer will overlap this modal.
Could this issue be renamed to the following?
Add centered pop up modal dialogue with all calendar notifications and group manipulation buttons
Motivational screenshot of such a simple modal:

Some little goodies making your face smile:
- The pink dots show color of the calendar the event comes from.
- The list "slowly jumps" (as an animation) to reposition itself by up to half the height of a single notification item after releasing your scrolling finger. This aligns the top visible notification item with the top edge of the "list window view/box". Useful for smaller screens as it turns the situation "item at the top window view/box edge is only half visible thus unreadable and item at the bottom window view/box edge is only half visible thus unreadable" to "the top item is fully visible and readable and bottom fully hidden".