No one is pretty sure or confident that steemit will be a leading social media of future. There are many things because of which steemit may not be the one. Despite of many many benefits and extraordinary features there are still a lots of room for improvement.
Bots
If you look at the trending posts then there are a lot of crap. People with money are boosting their post and the posts written with hard work is being vanished in the ocean of crap posts. This is because of bots in steemit. We use bots very rarely but we know it is very bad for the ecosystem. We don't say don't use bot but we ask steemit to make a regulation for bots.
There maybe some ideas like we don't want to be regulated but if this happens then eventually everyone will quit steemit, everyone will power down except the whales and eventually they will power down too. But we are seeing some positive response to it. 
Moreover people are motivated not to write quality posts because the system doesn't reward quality. It only rewards people who use bots a lot or have excess to the whales. Many good content creators are getting pissed off. If someone is coming here for money, using bot and taking money then it no longer will be a social media. It will be a faucet or something like that of a different kind.
Complex for beginners
For a person beginning steemit it is really difficult. A social media is where everybody joins, from old people to young people. Look at facebook and twitter, there are old and very less educated people there. But steemit seems to be pretty hard. Further more the wallets are confusing, password can't backup (It is a good thing but people will take time to know).
No notification and Chat
There is no clear notification that we have a reply, we can't mention our friend, we don't have any chat rooms and many more problems. Sometimes the Reward buttons disappears (The one saying 50%/50%), no direct video upload and many more bad user experience.
Blockchain Mainstream
It is still hard to say will blockchain ever be a mainstream or not. There is a high probability that it will be but no one can say. If blockchain fails then steemit will automatically fail.
Despite of all the downsides of steemit, it has many positive sides. We really think steemit board will solve the problems with steemit. We think when the system matures, bots will be less frequently used and there maybe some regulation for that. If steemit goes mainstream then we will all be in huge profits as we are the initial members here and for newer member to reach our status must pass through a very tough path, more tougher than we did !
