I think that Steemit inc is concentrating more on developing the platform that no one has really paid attention to the front end as such. Most users today don't even use Steem to log in as they use another app like Steam peak or busy.org. There are so many now I have lost count.
I stick with the original but have looked at some of the others. Maybe in the future it will be bought up to date and given a face lift but chances are it wont.