Certainly, many enthusiasts are looking forward to Diablo Gold hearing about Diablo 4 at Blizzconline early next year. What's going to be shown there remains to be seen, however an upgrade of some sorts would go a very long way. It's even possible that at least one of both missing launching classes (the three supported being Barbarian, Druid, and Sorcerer) are revealed, however what they could be is only known by Blizzard.
Nevertheless, there are some Diablo classes that look unlikely compared to others, like the Amazon, which would be a perfect fit. One thing fans must remember is that the present composition of courses that affect this, namely being that there is already two spellcasters plus a melee focused character. The likeliest niche to be filled is just another melee course for those who don't need the barbarian, as well as a dex-based ranged one. For now, here is a couple of classes that fans shouldn't expect to see at launching.
Sadly, this is probably the most-demanded but least likeliest class. The Diablo 3 Necromancer was incredibly popular, and fans would like to see it return. It's simply not likely to happen for a few reasons. First, it had been included as DLC in the last game, so it would be strange to see it appear first thing at launch in the next.
Secondly, while using three spellcasting and magic-based classes wouldn't really be a bad thing in Diablo 4, this market already has the Druid and buy Diablo Immortal Gold the Sorcerer. Again, something Dex-based seems like a shoe in for a few of the classes, leaving the Necromancer on its own.
