I think this will happen eventually, bittrex has recently introduced this system which is a very good sign that crypto will be adopted. so this is very good news that is likely to happen. and yes a backbone for another big bull,
I don't see any negative side about this news because for me whether it is fiat or digital currency, they are usable nowadays. In fact, we can't start in trading coins if we will not burn our fiat and turn it into digital currency.
Yes, it will happen eventually because top exchange will do it, other exchanges like bittrex will follow up.