Wisp Improvement

I honestly believe this is how the Wisps should work:

- When you spawn into a map with Wisps, you "pick it up" by running into it.
- Since you can't see rare icons on the minimap until you've hit all checkpoints, it's pretty hard to exploit by running around the entire map to juice the wisp before letting it latch onto a rare.
- It will stay on your shoulder (or sth like that) until you run into a rare, and it jumps onto that rare.
- If it does revive after the rare, it will go back to you until the next one.
- Essence encased wisps can just stay as they are, since they're trapped inside the essence anyway.

This allows players to keep their mapping pace without having to abandon content to run after the wisps.

Another issue is that Idols hardly ever drop, and I don't think many of them are useful.