I'd like to see the ability to have organized resteems on your home page, or a private tab where you can organize your favorite content. Eventually your favorite resteems will get burried with more resteem and your own content.

I'd also like to see the comments have a minimum size so that people stop posting random things that have no real value to the post.

"Great Job Resteemed and Upvoted!" is annoying to read. I wont upvote a comment like that, and it does no good for the community, so why have it? Instead you can replace it with perhaps a heart or a emojicon if someone really wanted to give a reaction to it other an an upvote.