Maybe there are tons of definition what a casual might be. For me, casuals are players who may not be skilled enough for savage, but still skilled enough for at least a bit challenging (not hard) content. Who said that every casual player love to doing a boring and long grind? Especially those players, who dont have that much time.
The whole relic questline could a least more fun, if you mix a bit open world grind with a bit challenge in it. Not that much time consuming, no instanced areas, no long tedious grinds and especially no damn RNG.
Just a small idea for a alternative relic quest step:
You can buy a book with tomes (100 per book), but you only can have one per kind in your inventory.
Each book comes in 4 kinds: Blue, Green, Yellow and Red. Each book comes with 5 random objectives (depending on its color), but you only need to complete 3 of them.
- Blue books (the book of grind) can be completed by completing a specific amount of dungeons/raids/fates/pvp/whatever.
- Green books (the book of monsters) can be completed by finding specific open world monsters. Only hints are given you have to make a snapshot from them.
- Yellow books (the book of collection) can be completed by collecting and/or crafting specific items. You only need to have them in your inventory until you finished your book.
- Red books (the book of challenge) can be completed by defeating some extreme primals.
For a weapon, you have to complete 10 books, no matter which kind. Armor parts need to complete 5 books.