I agree with writing your posts in an editor only because I have lost posts that I worked hard on after the browser glitched of steemit had an issue, so good call but for the wrong reason (if I am wrong please show me this would be very interesting). I BELIEVE (again if I am wrong please let me know), that your browser is using either a cookie or local storage to actually keep the post draft, not publishing it as you write it to the blockchain.
Agreed! We are working on an all onblockchain solution for this actually with @shadowbot!
Scheduling is a big thing and something we are working to automate with a few tools ;)
Great tips over all I agree!