I want to distinguish between confirmed, tentative, unconfirmed, and declined events
It would be nice if the declined event was hollow striked through, the unconfirmed hollow, the tentative hatched, and the confirmed full coloured similarly to google's native calendar. I'm not relying on this specific combination but it quite makes sense to me.
It would really help me with processing of the events for the upcoming week. I would simply see what events were processd and what need to be still reviewed.
Currently I need to use different app for this.
Try using the dedicated invite view: https://appgenix.uservoice.com/knowledgebase/articles/1110691-using-the-invite-view