You are right, Busy has many advantages over the Steemit. They are: notifications, voting slider for minnows, built-in voting stats, ability to see all your upvoters (not only the first 20) and their impact on your post. And of course, dont forget about free upvotes from Busy.org.
This all makes Busy a really cool tool for steemians. My favourite "door to the Steem blockchain" for now:-)
Yup! I love how I hardly ever need to check things on the blockchain because everything I usually want to know is just right here, pretty sweet!