There are some easy (comparatively) additions that HTC can make. Adding weaponry to the 262 is one, adding more weapon options to the 190 family is another. Even adding the 190A-6 would be little more than copy & paste. Not to mention the A-2, A-3, A-4, A-7 and A-9. There is often this one issue with german gear though, lack of documentation.
The community at large seem to be biased against it. The logic often seem to be "Germany lost the war therefore you can't have that, we must win!" A logic which of course can not be argued with and anyone who attempt to have to surrender their reasoning.
So... it likely will not happen. But then, us luftwaffles are used to fighting from a disadvantage and to make do with what is available.
In other words... WHATEVER. Don't hold your breath.