As aforementioned, including a Healer-focused course would change a lot about Diablo's gameplay, to this stage it may not even be Diablo Gold any more. In the majority of games using a Healer, even ones capable of some harm output, they must hang back. This is the case for healers in World of Warcraft, Overwatch, and so many more games since, as any enemy naturally will, Healers will be well targeted. In Diablo's situation specifically, this would indicate that there would have to be a fundamental change where hanging back and recovery, while dealing harm in spurts, was potential. But the gameplay is far too rapid from this, and also a change of this magnitude would upset several.

On top of that, it can be readily seen why those who like to cure would prefer some type of representation in Diablo 4. A whole lot of games have classes that focus on healing, but these games tend to be forced co-op or multiplayer matches. Because of this, a Healer course would be mostly weakened concerning solo play, as their abilities may be focused on recovery themselves and even others, but keeping up with all the damage output would be tough unless the course has been overpowered. This would signify the Healer course would only work for those with dedicated classes to perform with, and devoting one whole class to such a tiny market (as there oftentimes see to be more of those who DON'T want to play with heals than the ones that do) would just bring down more than it brought up.

Ultimately, nobody can mistake those who prefer this playstyle from wanting a role at a Diablo game, and it's certainly possible within a well-defined set-up for this. But the changes that could contribute to Diablo would not just observe a huge blowback in all likelihood, there could be a huge number of limits and balancing acts for the class that it's difficult to see it being worth it. A healer course for Diablo 4, at least at the most-defined terms of the class, is not likely to occur, and the same can probably be said for many future Diablo games.

Certainly, many enthusiasts are looking forward to hearing about Diablo 4 in Blizzconline early next year. What's likely to buy Diablo Immortal Gold be shown there continues to be seen, but an upgrade of some sorts would go a very long way. It is even possible at least one of both missing launching classes (the three supported being Barbarian, Druid, and Sorcerer) are shown, however what they could be is only known by Blizzard.