As great as Steemit can be (particularly for browsing, thanks night mode) I actually post the bulk of my posts via the Busy.org website. Busy has a number of nice features that are useful for regularly composing authors. I assumed many of them would be integrated into the Steemit website front-end, but it's clear that the focus on development for STINC is SMTs and not Steemit. As a result, Busy is quickly outpacing Steemit in terms of features and functionality.
Mirrors of Steemit are very handy to have as they serve as a form of "decentralization" for the blogging aspect of Steem(it). If Steemit goes down (the website), other mirrors can still be used to view and interact with the Steem blockchain. This, in turn, reduces the likelihood of DDoS and other attacks on Steemit as they are less effective in the face of viable alternatives.
Competition also good for the end user (us bloggers and readers.) New features implemented by either portal (or other competitors) raise the bar and increase the likelihood of those changes reaching the other platform.
Let's look at the drafts function. This would seem an obvious feature to have on any blogging platform, but it is conspicuously absent from Steemit (replaced only by an autosave that clears any time "Post" is clicked - much less useful.)
We've had problems in the past with Steemit eating posts, and I have personally had to re-write a post or two. Things have been stable for awhile, but the drafts function is good insurance and also allows you to setup a blank-template to start each post with. This way, you can include your signature, links, and other data at the bottom of your post, as well as preserve some basic formatting like title headers or post image-centering.
Another clever feature Busy has is the built-in price ticker that (I think) adapts to different price quotes based on the viewed content. It can be seen right above the "recommended posts" widget, which is also periodically handy:
Busy also has a widget with suggested "Interesting People" to follow, and I'd have to say the algorithm is pretty accurate. I've followed a number of interesting people who I already read, but had slipped through my "follow" button cracks from the widget.
Another great feature that will probably interest most users with an established blog is the "Busy boost." If you post via Busy.org, and tag your post with Busy (any tag, doesn't need to be first), you'll receive an upvote from Busy.org which can be very large. I'm not sure of the current formula to determine the size of the vote you receive, but it used to be related to how much Steem Power your followers had in total.
The final feature I'll mention is Busy's advanced filtering for events related to your Steem account. You've got pretty powerful filtering tools here, compared to Steemit, and it often means you don't need to consult outside tools to get the data you want.
We also have a Radio Station! (click me)
...and a 10,000+ active user Discord Chat Server! (click me)