Great points. I believe STEEM is one of the few coins that could make top-10 very soon without casting more negative light on the space as a whole (looking at Tron...).
I've been a big believer in Ether, as probably the most promising of the "platform tokens" without artificially inflated/ insecure tx/s but I see a LOT of interoperability opportunities with it, Stellar, etc.
That said, STEEM has some of the unique features that will be necessary of social platform tokens - super promising.
For more insights into markets, tech, new CoinReviews, follow me @publicfigure