I feel like most of the increase in Steem's price is currently coming from the general market pool raising in the crypto-world, not cause of Steemit itself. The introduction of communities and the ease of convenience to create new accounts, they might help for sure. But the one thing that I personally await the most, and can potentially be a real gamechanger, is once SMTs arrive. It will bring forth communities in a broader sense, as well as bringing in new investors.