1. You can't turn off points collection, but you can hide goodies. It will still beep, and your icon will change when you eat it though, because it is still really there, just "hiding" visually only.
2. No, you can only reduce the event radius to 5 miles. We're hopeful for a future update with more granular/better preferences
3. That would be nice, yes. I would still like the "found a better route" notification to pop up, but the ETA change only doesn't need to alert like that. We could request that change.
4. Each popup type has a different timer length. What is the ETA one set to? We could request that be changed.