Great work so far on 1.5!
one thing i have noticed is that when applying the reward points to a customers account, you have to click the little green '+' but there is no notification that the points have been added to the customers account, so an admin may click the button 2 or 3 times and add the points over and over without knowing.
Steps to replicate:
Sign in with dummy customer details
purchase item with reward points added
process through checkout
go in to admin area and goto orders
find 'purchased' order and view
scroll down to reward points and press green + 4/5 times
Sign back in to dummy details on store front and go to My Account
Select 'Your Reward Points' and you will see the 4/5 lots of points for the specified order number.
It would be better if a message appeared to say the points had been added with each press of the +
Just an observation / request

Cheers
M