The OHC and counterbalancer are, IMO, measures to please the reviewers and meet public expectations.
The reviews of Enfields in the last 5-10 years have all included negative reports of vibration levels. So, I think that this spawned the counterbalancer.
The general public seems to equate OHC with modern performance engines, and they seem to expect it. Never mind that the pushrod system is quite capable up to, and above, any rpms that this powerplant is going to rev to. That doesn't seem to matter. If you read many blog posts about RE, they commonly mention about how RE is far behind the technology with their pushrod valve train. They want 4-valve OHC designs, or at least they think that they want those things, mostly because they read the other manufacturers have them.
So, what does this all mean?
IMO, it seems pretty clear that this is a "me too" effort, which attempts to move closer to the mainstream market. In doing so, it blends in with the rest of the crowd, probably at the lower end of the crowd. If this trend continues, the only way to tell an RE from anything else will be the elephant trunk logo on the tank.
But, we must remember that this is the goal of the owner, to make the company very big. To do that, it inherently requires losing the unique soul of the product. It requires it because it has to appeal to the broad range of the market, and it can't have the limited appeal of the niche market anymore. I think we need to brace ourselves for what is to come.