IMHO, nothing could beat Bitcoins because it holds the majority of the market share and something that holds the cause for the existence of this "crypto" world could not be put behind by any such technology for whatsoever reasons. If it was to put it behind, why is it slipping during Bitcoin's rise?
This shows the superiority of Bitcoins has taken an all new level and can put everything too much behind where none of these could even try to catch up.