Seems nice. I really doubt it would be a real competition thanks to SMTs. Narrative (NERV) is another project based on NEO but they are not going for the all on blockchain route. I think they'll be OK: https://steemit.com/analysis/@vimukthi/what-if-facebook-and-reddit-had-a-decentralized-censorship-resistant-baby-reading-the-narrative-nerv-whitepaper

ONO has good marketing but I'm not that impressed about it either. I do like GOLOS and YOYOW as they are very similar to STEEM but focused on sort of a niche. Mithril on the other hand is a disaster IMO.