i love the steemstem.io interface. It loads faster than the steemit.com at my end here.
i made some observations which i think others might have too(in case i repeat what others have written) but i can't go through all the comments.

I made a post using steemstem.io , I would have loved if there is a preview panel under it.

The order of the comments is not sorted by the post payout but by time and there was no place to change the option.

I first thought I could use more than 4 tags but I realized the 5th one was reserved for "steemstemtest"

I edited my post an added some html tags on my editor. When i copied it and pasted it in steemstem.io, i realized the html tag was showing in the final post. The screenshot below is what i got.

There is no button for "edit post" botton. so, when i wanted to edit it with steemit.com, i got the display as showed in the screenshot below.

There is this button that expanded the edit panel when i pressed it but i couldnt see any place to press in order to minimize this panel. i got the same effect when i tried it with my phone too.