I really think AND hope there will be ingame currency. Before you hate me, give it a shot:
- In-Game currency giving such a game a good headstart to make up for all the time and money they have invested so far
- It can be useful for real fans to show off their respect and support
- It seperates big spenders from casual players (which sounds bad, but is a good thing which keeps games alive actually!)
The most important thing is to keep a good balance between casher items and lootable items. You could implement loot bonuses for example, or more gold drops for a few hours so people cant directly buy the ingame cash but rather go and farm while their gold-loot booster is active!
Get that right and the game will be perfect indeed!
And I also really hope cosmetic items will be availabe for store currency rather than ingame gold drops.