Depends with the situations, if fans called it up and promoters see opportunities to earn good cash, then why not call this fight.
But like what you have said those Names are very well known even the twins made their respective fights, calling the attentions of promoters will definitely beyond fans desire to see them in much higher crowd.
We do hope that they get some boxing fans in this win. They are under Al Haymon if I'm not mistaken, one of the most powerful promoters we have right now and I'm sure the twins will get what they deserved. It's just they are really behind Canelo and GGG in the middleweight division that's why they are not the recognized.
But the doors are open for them now, regardless if they are small in that division, they should aim for bigger fights and biggest payments. They are not that young though, they are in their 30's so they might be in the peak of their career so they need to hurry up or at least their manager/promoter should by now.