If anyone is interested, this is footage from about 8 months ago of Dominus working with a coach:
In 8 months things can change. But there was a lot going on that was not so great from a technical standpoint back then and back then he was a big EJ.
Without seeing new footage that shows he knows how to move his feet and adjust to the ball or to actually do something to the ball like make spin contact, I am suspicious of the reasons for him wanting a Viscaria rather than wanting to improve his technique.
In footage from match play at about this time, I think I watched 4 matches and noticed that in 4 entire matches, there was never a rally of more than 3 shots, (serve, return and 3rd ball). 95% of the rallies ended with the ball in the net or being hit long. The biggest issue, back then that I saw was an inability to hit the table.
I am not so sure that 8 months later a Viscaria would be useful to Dominus. And I would need to see current footage to change that opinion.
From the technical things I see in the footage from November 2017 posted above, I am not so sure that Dominus could have improved enough to make the purchase of a Viscaria even remotely make sense.
If he is injuring himself as a result of poor form, and cannot hit the ball with enough power with a Korbel, I don't think a faster blade is the answer. Someone with good form could hit rocket launchers with the setup Dominus is using. So I have to conclude that the problem is actually technique. Not the equipment. Without the video evidence, it makes no sense to assume Dominus has jumped the 12 levels it would take for him to play at an intermediate level from the beginner level we can see from last November.
There is nothing wrong with being an enthusiastic player who wants to improve. But equipment won't do that for you. You have to put in the time.
And if he does not make spin contact, of course he feels that Hurricane 3 is slow. It is only fast if you know how to touch the ball precisely. And if you watch his contact, every hit is different and they are all pretty flat on the "topspin" shots.