When you sign up new users they have 0 HP. You can't really do much of anything with 0 HP drastically reducing the user experience of new users. I would recommend delegating 5-15 HP to new users for 30 days and removing it at 30 days.
I created a new account just to test it and they are still delegating that account 10 HP. That was a couple months ago.
All in all these are good (but more importantly simple) changes that improve the UX.
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