Slightly off topic, but discord is nice for a multitude of reasons.
- Pins - Easy to find information that is stickied
- Text Chat - Generally there are people online in discord and you can get your answer quite quickly, within in seconds.
- Voice Chat - While not necessarily used in class discords, it's great for guilds, why have a separate voice chat program when you can use the same one your class info is at?
- Discord Bots - Some questions get answered repeatedly, something that has been a problem with every medium, since well, forever. Discord bots can be given custom commands where a user can input one and have the bot spit out info for it, we use them in the priest discord often.
I understand the hesitance for using discord, but also understand that the majority of class discords also have a website that pairs with them. If they don't there is also wowhead/icy veins to serve as general guides, which is a good starting point for most players. Class discords exist to help players who have specific questions they either can't find the answer to, or they need a quick answer then and there.