Beta impressions have been super great from everybody, including the pros and even known SF haters and fans or proplayers from other series.
I think the game will quickly beat SFV as the best selling Capcom fighting game ever, maybe in a year or less. And time later I think will outsell the best selling MK and Tekken games, becoming the best selling fighting game ever. I think that in the long term it may even outsell MH World and become the best selling Capcom game ever, or more exactly the top grossing game ever.
Because I think that with all the features, specially the social ones, people is going to be really engaged here during a shit ton of time. And with all the customization options it has, I assume they'll have a shit ton of season passes or IAP to buy. And the more time people play, the more chances are that they may end paying for IAPs.