Right-justification of prices in order details tables, and fix discounts
Not an idea, so much as two easy fixes:
1 - prices should be right-justified. You can do this in css with class 'amount'), but...
2 - negative prices then don't display correctly; the '-' is outside the 'amount' span.
Fixing negative prices is easy, in abstract-wc-order.php:
1 - remove the "'-' ." on line 1753; instead...
2 - roll the minus into wcprice on line 1697. Instead of wcprice(x), enter wc_price(0-x).
That's it. You can now add custom css to diplay class 'amount' with right-justification. It's in a span, so remember to change 'display' to 'block'.
The payment method also needs a class so that text alignment can be set without modifying templates.