Just remove the crossed-out items in the store; why are some items just gone (e.g. snowball) while others crossed out?
I find the visual cues for quests aren't very helpful. The gold rings around a point are obvious, but not if you're elsewhere when they show up. A single regular ping also doesn't help, as pinging points tends to happen frequently. There's also no quick way to find out which point you have to defend without staring at the map to find the shield (which appears under champion icons iirc) or checking the little bars at the top right.
There's even less feedback for when the quest is complete, too.
I would suggest more noticeable visuals on the minimap when quest points first appear, as well as a more noticeable quest failed / complete notification.